Medicine

US Life Expectancy Falls For 2nd Year In a Row 209

Despite the availability of life-saving COVID-19 vaccines, so many people died in the second year of the pandemic in the U.S. that the nation's life expectancy dropped for a second year in a row last year, according to a new analysis. NPR reports: The analysis of provisional government statistics found U.S. life expectancy fell by just under a half a year in 2021, adding to a dramatic plummet in life expectancy that occurred in 2020. Public health experts had hoped the vaccines would prevent another drop the following year. "The finding that instead we had a horrible loss of life in 2021 that actually drove the life expectancy even lower than it was in 2020 is very disturbing," says Dr. Steven Woolf, a professor of population health and health equity at Virginia Commonwealth University, who help conduct the analysis. "It speaks to an extensive loss of life during 2021."

Many of the deaths occurred in people in the prime of their lives, Woolf says, and drove the overall U.S. life expectancy to fall to 76.6 years -- the lowest in at least 25 years. "The motivation for this study was to determine whether the horrible drop in life expectancy that we documented in 2020 resolved or rebounded in 2021 or whether there was a continued decline. Unfortunately, we did not find good news," Woolf told NPR in an interview.
Science

The Most Precise-Ever Measurement of W Boson Mass Suggests the Standard Model Needs Improvement (phys.org) 35

After 10 years of careful analysis and scrutiny, scientists of the CDF collaboration at the U.S. Department of Energy's Fermi National Accelerator Laboratory announced today that they have achieved the most precise measurement to date of the mass of the W boson, one of nature's force-carrying particles. Phys.Org reports: Using data collected by the Collider Detector at Fermilab, or CDF, scientists have now determined the particle's mass with a precision of 0.01% -- twice as precise as the previous best measurement. It corresponds to measuring the weight of an 800-pound gorilla to 1.5 ounces. The new precision measurement, published in the journal Science, allows scientists to test the standard model of particle physics, the theoretical framework that describes nature at its most fundamental level. The result: The new mass value shows tension with the value scientists obtain using experimental and theoretical inputs in the context of the standard model. If confirmed, this measurement suggests the potential need for improvements to the standard model calculation or extensions to the model.
United Kingdom

UK Startup Achieves 'Projectile Fusion' Breakthrough (ft.com) 46

A British startup pioneering a new approach to fusion energy has successfully combined atomic nuclei, in what the UK regulator described as an important step in the decades-long effort to generate electricity from the reaction that powers the sun. From a report: Oxford-based First Light Fusion, which has been developing an approach called projectile fusion since 2011, said it had produced energy in the form of neutrons by forcing deuterium isotopes to fuse, validating years of research. While other fusion experiments have generated more power for longer, either by using "tokamak" machines or high-powered lasers, First Light says its approach, which involves firing a projectile at a target containing the fuel, could offer a faster route to commercial fusion power. "The value of this [result] is that it offers potentially a much cheaper, a much easier path to power production," said chief executive Nicholas Hawker.

To achieve fusion, First Light used a hyper-velocity gas gun to launch a projectile at a speed of 6.5km per second -- about 10 times faster than a rifle bullet -- at a tiny target designed to amplify the energy of the impact and force the deuterium fuel to fuse. The design of the target -- a clear cube, a little over a centimetre wide, enclosing two spherical fuel capsules -- is the key technology and is closely guarded by the company. "It is the ultimate espresso capsule," Hawker told the Financial Times last year. First Light, which is backed by China's Tencent, hopes to manufacture and sell the targets to future power plants -- built to its design -- which would need to vaporise one every 30 seconds to generate continual power.
Further reading: So How Close Are We Now to Nuclear Fusion Energy? (August 2021).
News

'Bill Nye, the Sellout Guy' (gizmodo.com) 278

An anonymous reader shares a report: Bad news for everyone who loved watching Bill Nye the Science Guy during middle school science class: your fave is problematic. This week, Coca-Cola, one of the world's biggest plastic polluters, teamed up with TV's favorite scientist for a campaign to create a "world without waste," a joke of a corporate greenwashing campaign. In a video innocuously titled "The Coca-Cola Company and Bill Nye Demystify Recycling," an animated version of Nye -- with a head made out of a plastic bottle and his signature bow tie fashioned from a Coke label -- walks viewers through the ways "the good people at the Coca-Cola company are dedicating themselves to addressing our global plastic waste problem." Coke, Nye explains, wants to use predominantly recycled materials to create bottles for its beverages; he then describes the process of recycling a plastic bottle, from a user throwing it into a recycling bin to being sorted and shredded into new material.

"If we can recover and recycle plastic, we can not only keep it from becoming trash, but we can use that plastic again and again -- it's an amazing material," quips Shill Nye the Plastic Guy. "What's more, when we use recycled material, we also reduce our carbon footprint. What's not to love?" What's not, indeed! The video is, on the surface, an accurate depiction of the process of recycling a beverage bottle. The problem lies in what recycling can actually do. Nye paints a rosy picture in the video of plastic Coke bottles being recycled "again and again" -- but if everything worked like he's said, we wouldn't be facing plastic pollution that has grown fourfold over the past few decades. Thanks to concerted lobbying efforts, the public has been led to believe that recycling is the cure for our disastrous plastic addiction. What it does in actuality is place the burden of responsibility on the consumer and allow companies like Coca-Cola to get away with no repercussions for their waste.

Science

Mushrooms Communicate With Each Other Using Up To 50 'Words', Scientist Claims (theguardian.com) 45

An anonymous reader quotes a report from the Guardian: Buried in forest litter or sprouting from trees, fungi might give the impression of being silent and relatively self-contained organisms, but a new study suggests they may be champignon communicators. Mathematical analysis of the electrical signals fungi seemingly send to one another has identified patterns that bear a striking structural similarity to human speech. Previous research has suggested that fungi conduct electrical impulses through long, underground filamentous structures called hyphae -- similar to how nerve cells transmit information in humans. It has even shown that the firing rate of these impulses increases when the hyphae of wood-digesting fungi come into contact with wooden blocks, raising the possibility that fungi use this electrical "language" to share information about food or injury with distant parts of themselves, or with hyphae-connected partners such as trees. But do these trains of electrical activity have anything in common with human language?

To investigate, Prof Andrew Adamatzky at the University of the West of England's unconventional computing laboratory in Bristol analyzed the patterns of electrical spikes generated by four species of fungi -- enoki, split gill, ghost and caterpillar fungi. He did this by inserting tiny microelectrodes into substrates colonized by their patchwork of hyphae threads, their mycelia. The research, published in Royal Society Open Science, found that these spikes often clustered into trains of activity, resembling vocabularies of up to 50 words, and that the distribution of these "fungal word lengths" closely matched those of human languages.

Split gills -- which grow on decaying wood, and whose fruiting bodies resemble undulating waves of tightly packed coral -- generated the most complex "sentences" of all. The most likely reasons for these waves of electrical activity are to maintain the fungi's integrity -- analogous to wolves howling to maintain the integrity of the pack -- or to report newly discovered sources of attractants and repellants to other parts of their mycelia, Adamatzky suggested. "There is also another option -- they are saying nothing," he said. "Propagating mycelium tips are electrically charged, and, therefore, when the charged tips pass in a pair of differential electrodes, a spike in the potential difference is recorded." Whatever these "spiking events" represent, they do not appear to be random, he added.

Communications

Amazon Signs Multibillion-dollar Project Kuiper Launch Contracts (spacenews.com) 54

schwit1 shares a report from SpaceNews: In the largest commercial launch deal ever, Amazon is purchasing up to 83 launches from Arianespace, Blue Origin and United Launch Alliance to deploy most of its 3,236-satellite Project Kuiper broadband megaconstellation, contracts worth several billion dollars. Amazon announced April 5 the agreements to launch an unspecified number of satellites on Ariane 6, New Glenn and Vulcan Centaur rockets over five years. The launches are in addition to nine Atlas 5 launches it purchased from ULA a year ago. Amazon did not disclose financial terms but said it is spending billions of dollars on these contracts as part of the constellation's $10 billion overall cost.

Amazon is buying 38 Vulcan launches from ULA. The agreement includes additional investments in launch infrastructure to support a higher flight rate, such as a dedicated launch platform for Vulcan launches of Kuiper satellites. ULA will make its own investments to support processing two launch vehicles in parallel. "With a total of 47 launches between our Atlas and Vulcan vehicles, we are proud to launch the majority of this important constellation," Tory Bruno, chief executive of ULA, said in a company statement. "Amazon's investments in launch infrastructure and capability upgrades will benefit both commercial and government customers." The Arianespace deal includes 18 Ariane 6 launches, a contract that Stephane Israel, chief executive of Arianespace, described in a statement as the largest contract in his company's history. Blue Origin is selling 12 New Glenn launches with an option for 15 more. Notably absent is SpaceX, which in addition to its Falcon and Future Starship vehicles is developing its Starlink broadband constellation that will compete with Kuiper.

Biotech

New Blood Test Predicts Risk of Heart Attack, Stroke With Twice Previous Accuracy (theguardian.com) 51

An anonymous reader quotes a report from the Guardian: Scientists have developed a blood test that can predict whether someone is at high risk of a heart attack, stroke, heart failure or dying from one of these conditions within the next four years. The test, which relies of measurements of proteins in the blood, has roughly twice the accuracy of existing risk scores. It could enable doctors to determine whether patients' existing medications are working or whether they need additional drugs to reduce their risk. It could also be used to hasten the development of new cardiovascular drugs by providing a faster means of assessing whether drug candidates are working during clinical trials. The test is already being used in four healthcare systems within the US and [...] it could be introduced to the UK in the near future.

[Researchers] used machine learning to analyze 5,000 proteins in blood plasma samples from 22,849 people and identify a signature of 27 proteins that could predict the four-year likelihood of heart attack, stroke, heart failure or death. When validated in 11,609 individuals, they found their model was roughly twice as good as existing risk scores, which use a person's age, sex, race, medical history, cholesterol and blood pressure to assess their likelihood of having a cardiovascular event. The results were published in Science Translational Medicine. Importantly, the test can also accurately assess risk in people who have previously had a heart attack or stroke, or have additional illnesses, and are taking drugs to reduce their risk, which is where existing risk prediction scores tend to fall down.

Earth

Microplastics Found Deep in Lungs of Living People for First Time (theguardian.com) 73

Microplastic pollution has been discovered lodged deep in the lungs of living people for the first time. The particles were found in almost all the samples analysed. From a report: The scientists said microplastic pollution was now ubiquitous across the planet, making human exposure unavoidable and meaning "there is an increasing concern regarding the hazards" to health. Samples were taken from tissue removed from 13 patients undergoing surgery and microplastics were found in 11 cases. The most common particles were polypropylene, used in plastic packaging and pipes, and PET, used in bottles. Two previous studies had found microplastics at similarly high rates in lung tissue taken during autopsies.

People were already known to breathe in the tiny particles, as well as consuming them via food and water. Workers exposed to high levels of microplastics are also known to have developed disease. Microplastics were detected in human blood for the first time in March, showing the particles can travel around the body and may lodge in organs. The impact on health is as yet unknown. But researchers are concerned as microplastics cause damage to human cells in the laboratory and air pollution particles are already known to enter the body and cause millions of early deaths a year.

Medicine

India Reports First Case of Highly Transmissible XE Variant (bloomberg.com) 64

Mumbai's city administration reported India's first case of the highly-transmissible coronavirus variant, XE, on Wednesday. From a report: The hybrid of two omicron strains BA.1 and BA.2 was detected in a 50-year-old woman who had traveled to the city from South Africa in February, the Brihanmumbai Municipal Corporation said in a statement. The asymptomatic patient had no cormorbidities and had been quarantined after being diagnosed almost a month later in March, the BMC said. The hybrid strain, which was first detected in the U.K., could be the most transmissible variant yet, according to the World Health Organization.
Medicine

$4 billion Health Tech Startup Olive Overpromises and Underdelivers (axios.com) 24

Olive is the buzzy startup whose purple "go save health care" buses dominate industry conferences. But its promises to save health systems millions of dollars with its automation software don't deliver. Axios reports: An Axios investigation finds that Olive relies on rough estimations for its calculations, inflates its capabilities and, in many cases, generates only a fraction of the savings it pledges. Erin's reporting includes interviews with 16 people, including former and current employees and health tech executives.

Valued at $4 billion by firms like Tiger Global and Vista Equity Partners, Olive is the highest-profile startup in health care automation; a holy grail that promises to cut costs and direct more time toward patient care. In just 10 years, Olive's promise to reduce its clients' administrative spending by roughly 5X the cost of installing the software has garnered the attention of some of the largest health systems in the U.S. Axios' reporting, which includes interviews with 16 people -- including former and current employees, health tech executives and others -- finds Olive is failing to deliver on those promises.

Science

Lab Turns Hard-To-Process Plastic Waste Into Carbon-Capture Master (phys.org) 26

An anonymous reader quotes a report from Phys.Org: What seems like a win-win for a pair of pressing environmental problems describes a Rice University lab's newly discovered chemical technique to turn waste plastic into an effective carbon dioxide (CO2) sorbent for industry. Rice chemist James Tour and co-lead authors Rice alumnus Wala Algozeeb, graduate student Paul Savas and postdoctoral researcher Zhe Yuan reported in the American Chemical Society journal ACS Nano that heating plastic waste in the presence of potassium acetate produced particles with nanometer-scale pores that trap carbon dioxide molecules. These particles can be used to remove CO2 from flue gas streams, they reported.

"Point sources of CO2 emissions like power plant exhaust stacks can be fitted with this waste-plastic-derived material to remove enormous amounts of CO2 that would normally fill the atmosphere," Tour said. "It is a great way to have one problem, plastic waste, address another problem, CO2 emissions." A current process to pyrolyze plastic known as chemical recycling produces oils, gases and waxes, but the carbon byproduct is nearly useless, he said. However, pyrolyzing plastic in the presence of potassium acetate produces porous particles able to hold up to 18% of their own weight in CO2 at room temperature. In addition, while typical chemical recycling doesn't work for polymer wastes with low fixed carbon content in order to generate CO2 sorbent, including polypropylene and high- and low-density polyethylene, the main constituents in municipal waste, those plastics work especially well for capturing CO2 when treated with potassium acetate.

The lab estimates the cost of carbon dioxide capture from a point source like post-combustion flue gas would be $21 a ton, far less expensive than the energy-intensive, amine-based process in common use to pull carbon dioxide from natural gas feeds, which costs $80-$160 a ton. Like amine-based materials, the sorbent can be reused. Heating it to about 75 degrees Celsius (167 degrees Fahrenheit) releases trapped carbon dioxide from the pores, regenerating about 90% of the material's binding sites. Because it cycles at 75 degrees Celsius, polyvinyl chloride vessels are sufficient to replace the expensive metal vessels that are normally required. The researchers noted the sorbent is expected to have a longer lifetime than liquid amines, cutting downtime due to corrosion and sludge formation.

Medicine

7,000 Steps Can Save Your Life (axios.com) 68

Mortality risk was reduced by 50% for older adults who increased their daily steps from around 3,000 to around 7,000, according to new medical research. Axios reports: 7,000 is the new 10,000, in terms of steps you should shoot for, The Lancet medical journal reports. This is all it takes for those 60 and older to dramatically increase their lifespans. Even for younger adults, the benefits of daily walking actually level off around 9,000 steps per day, not 10,000, the researchers found. The risk reduction plateaued beyond that number.

"Walking benefits nearly every cell in the body," says Amanda Paluch, a kinesiologist and public health expert at UMass Amherst and the lead author of the study. It's wildly effective. Walking strengthens your heart, improves bone density, relaxes your mind, and helps with muscle-building and pain management. Almost everyone can do it anywhere: your house, the office, outside. Start with 30 minutes and work your way up."It's not an all or nothing situation," says Paluch. Even just boosting daily step count to 5,000 -- for 60 and older -- and 7,000 -- for younger folks -- slashed mortality risk by 40%.

Science

Stolen Darwin Journals Returned To Cambridge University Library (theguardian.com) 29

The plot was worthy of a Dan Brown thriller -- two Charles Darwin manuscripts worth millions of pounds reported as stolen from Cambridge University library after being missing for two decades. From a report: The disappearance prompted a worldwide appeal with the help of the local police force and Interpol. Now, in a peculiar twist, the notebooks -- one of which contains Darwin's seminal 1837 Tree of Life Sketch -- have been anonymously returned in a pink gift bag, with a typed note on an envelope wishing a happy Easter to the librarian. The bag was left on the floor of a public area of the library outside the librarian's office on the fourth floor of the 17-storey building on 9 March, in an area not covered by CCTV. Who left them and where they had been remains a mystery. Dr Jessica Gardner, who became director of library services in 2017 and who reported the notebooks as stolen to police, described her joy at their return as "immense."

"My sense of relief at the notebooks' safe return is profound and almost impossible to adequately express," she said. "I, along with so many others, all across the world, was heartbroken to learn of their loss. The notebooks can now retake their rightful place alongside the rest of the Darwin archive at Cambridge, at the heart of the nation's cultural and scientific heritage, alongside the archives of Sir Isaac Newton and Prof Stephen Hawking."

Space

Jupiter-Size Exoplanet Caught In the Act of Being Born (science.org) 16

sciencehabit shares a report from Science.org: Astronomers say they have witnessed a planet being born from a disk of gas and dust swirling around a young star. Such claims have been made before, but the team comes to an even more controversial conclusion: that this planet is forming from gas that is collapsing under its own gravity, a mechanism known as gravitational or disk instability. That stands in contrast to a more widely accepted theory of planet formation, in which dust and rocks stick together, slowly building up a planetary core with enough gravity to pull in gas from the disk. If true, the planetary system would be the strongest evidence to date for disk instability. "This system stands alone right now," says team leader Thayne Currie of the Subaru Telescope in Hawaii.

That conclusion is already dividing theorists. "This system certainly looks like it's [undergoing] disk instability," says Alan Boss of the Carnegie Institution for Science, a longtime advocate of the theory. But Anders Johansen, a theorist at the University of Copenhagen who helped develop the rival theory of core accretion, is not convinced. "This could be either mechanism," he says. Although more than 5000 exoplanets have been discovered, only a few tens have been imaged directly, and none in the act of being born. Currie and colleagues were intrigued by the nearby star AB Aurigae because it was young -- somewhere between 1 million and 4 million years old -- and because its disk contains kinked, spiral features that could indicate protoplanets. But showing that some of the light from its disk was from a glowing-hot new planet rather than reflected starlight was no easy task. "We sat on this result for 5 years," Currie says. "I did not believe it was a planet until fairly recently."
The team published their findings in the journal Nature Astronomy.
Medicine

Alzheimer's Study Finds 42 More Genes Linked To Higher Risk of Disease (theguardian.com) 28

An anonymous reader quotes a report from the Guardian: The largest genetic study of Alzheimer's to date has provided compelling evidence linking the disease to disruption in the brain's immune system. The study, using the genomes of 100,000 people with Alzheimer's and 600,000 healthy people, identified 75 genes linked to an increased risk of the disease, including 42 that had not previously been implicated. The findings suggest degeneration in the brains of dementia patients could be spurred on by "over-aggressive" activity in the brain's immune cells, called microglia.

The study, the largest of its kind to date, also allowed scientists to devise a genetic risk score that could predict which patients with cognitive impairment would, within three years of first showing symptoms, go on to develop Alzheimer's. The score is not intended for clinical use at the moment, but could be used when recruiting people for clinical trials of drugs aimed at treating the disease in the earliest stages. The latest work highlights different sets of genes seen in more common forms of Alzheimer's, including a role for the immune system. "If [at the outset] we'd seen the genetics of common disease, we would've said this is an immune disease," said professor Julie Williams, the director of the UK Dementia Research Institute at Cardiff University and a co-author of the study. "It's not the same disease."

Risk genes highlighted in the study include ones that affect how efficiently the brain's immune cells, microglia, clear away tissue that is distressed. In people at risk, these housekeeper cells appeared to be working too aggressively. A similar pattern was found for genes that control how readily synapses, which connect neurons, send out an "eat me" signal when in distress. The high-risk variants appeared to lower the threshold for synapses sending out distress signals, causing the brain to purge connections at a quicker rate. The findings, published in the journal Nature Genetics, fit with previous results pointing to a role for the immune system. People with diabetes, which affects the immune system, are at considerably higher risk, for instance, and once dementia has been diagnosed infections can trigger more rapid cognitive decline.

Earth

Billions of People Still Breathe Unhealthy Air: New WHO Data (who.int) 55

An anonymous reader shares a report: Almost the entire global population (99%) breathes air that exceeds WHO air quality limits, and threatens their health. A record number of over 6000 cities in 117 countries are now monitoring air quality, but the people living in them are still breathing unhealthy levels of fine particulate matter and nitrogen dioxide, with people in low and middle-income countries suffering the highest exposures. The findings have prompted the World Health Organization to highlight the importance of curbing fossil fuel use and taking other tangible steps to reduce air pollution levels.

Released in the lead-up to World Health Day, which this year celebrates the theme Our planet, our health, the 2022 update of the World Health Organization's air quality database introduces, for the first time, ground measurements of annual mean concentrations of nitrogen dioxide (NO2), a common urban pollutant and precursor of particulate matter and ozone. It also includes measurements of particulate matter with diameters equal or smaller than 10 um (PM10) or 2.5 um (PM2.5). Both groups of pollutants originate mainly from human activities related to fossil fuel combustion. The new air quality database is the most extensive yet in its coverage of air pollution exposure on the ground. Some 2,000 more cities/human settlements are now recording ground monitoring data for particulate matter, PM10 and/or PM2.5, than the last update. This marks an almost 6-fold rise in reporting since the database was launched in 2011.

Earth

A 'Liveable Future' Depends on Slashing Emissions This Decade, Major Climate Report Finds (theverge.com) 174

The world needs to slash greenhouse gas emissions in half this decade, a landmark new United Nations report urges. To reach that goal, the globe needs to make a speedy shift to clean energy, reduce energy use, and deploy technologies that can trap some of our planet-heating carbon dioxide pollution, the report's authors say. From a report: "We are at a crossroads. The decisions we make now can secure a liveable future," Hoesung Lee, chair of the UN Intergovernmental Panel Panel on Climate Change, said in a press release. "We have the tools and know-how required to limit warming."

Hundreds of leading climate scientists participated in the report, which outlines what's needed to avoid all-out climate catastrophe. It boils down to one key call to action: "rapid and deep" reductions in greenhouse gas emissions across all sectors. It builds on previous research that finds that more than 1.5 degrees Celsius of global warming would be devastating for people and wildlife around the world. We are alarmingly close to breaching that threshold. We could surpass it before 2030, today's new report says. But we could rewrite that grim future if big changes are made to cut emissions in half this decade. The longer-term goal is to reach net-zero greenhouse gas emissions by the middle of the century in order to keep global average temperatures stable.

Mars

Sound Travels Much Slower on Mars, Researchers Find (cbsnews.com) 52

"For 50 years, interplanetary probes have returned thousands of striking images of the surface of Mars, but never a single sound." So says the largest fundamental science agency in Europe, the French National Centre for Scientific Research (France's state research organisation).

Then they made a surprising discovery, reports CBS News: Researchers studying recordings made by microphones on NASA's Perseverance rover found that sound travels much slower on Mars than it does on Earth... In addition, the researchers realized that there are two speeds of sound on Mars — one for high-pitched sounds and one for low-pitched sounds. This would "make it difficult for two people standing only five meters apart to have a conversation," according to a press release on the findings.

The unique sound environment is due to the incredibly low atmospheric surface pressure. Mars' pressure is 170 times lower than Earth's pressure. For example, if a high-pitched sound travels 213 feet on Earth, it will travel just 26 feet on Mars.

While sounds on Mars can be heard by human ears, they are incredibly soft. "At some point, we thought the microphone was broken, it was so quiet," said Sylvestre Maurice, an astrophysicist at the University of Toulouse in France and lead author of the study, according to NASA. Besides the wind, "natural sound sources are rare," the press release said.

But NASA scientists think Mars may become more noisy in the autumn months, when there is higher atmospheric pressure. "We are entering a high-pressure season," co-author of the study Baptiste Chide said in the press release. "Maybe the acoustic environment on Mars will be less quiet than it was when we landed."

Space

Former SpaceX Rocket Scientist Starts 'In-Space Propulsion' Company (arstechnica.com) 25

Ars Technica looks at the "in-space propulsion company" Impulse Space, which just announced $20 million in seed funding this week to help it build something called an "orbital transfer vehicle."

The company was founded by rocket scientist Tom Mueller, who the article describes as the first employee hired by Elon Musk for SpaceX, leading the development of SpaceX's Merlin rocket engine.

Impulse Space is apparently positioning itself for its own role in a future with lots of reusable rockets and cheaper launch costs: Founded last September, Impulse Space will initially seek to provide "last mile" delivery services for satellites launched as part of rideshare missions, likely including on SpaceX's workhorse Falcon 9 rocket.... While the company is not ready to discuss its specific technology, the goal is to deliver the most delta-V capability [velocity from fuel-burning] in the most efficient manner.

Impulse Space released a teaser video on this earlier this month. [The video's title? "Hello, Solar System...!" And it concludes with the words "Big things have small beginings."]

Impulse Space will seek to complement launch services with sustainable delivery in space, using green propellants and having vehicles with de-orbit capability. Barry Matsumori, who recently joined as the company's chief operating officer, said the company recognizes that if tens or hundreds of satellites will be launching on these heavy-lift rockets, they're going to need to reach different orbits and have different purposes... The company's initial business strategy involves low Earth orbit, but it envisions the need for sustainable transportation from the Earth to the Moon — in the form of a tug — and the storage and movement of propellant in both low Earth orbit and the lunar environment.

Once a company mines a space resource, after all, it will have to go somewhere.

Space

Two More Successful Rocket Launches from Satellite Launch-Service Providers (spacenews.com) 7

SpaceNews reports: The launch was the latest in a series of Electron launches of BlackSky satellites arranged by Spaceflight. That deal included launches of pairs of BlackSky satellites in November and December 2021 as well as a failed Electron launch in May 2021....

Rocket Lab did not attempt to recover the first stage of the Electron after this launch. The company said in November that, after three launches where it recovered Electron boosters after splashing down in the ocean, it was ready to attempt a midair recovery of a booster by catching it with a helicopter, the final step before reusing those boosters. The company has not announced when that recovery will take place, but hinted it would take place soon....

Lars Hoffman, senior vice president of global launch services at Rocket Lab, during a panel session at the Satellite 2022 conference March 22...added that the company has a "full manifest" of Electron launches this year, including the first from Launch Complex 2 at Wallops Island, Virginia, with a goal of launching on average once per month. "We're keeping pace with the market. We're trying not to get too far ahead."

Meanwhile, in mid-March Space.com reported that the launch-service provider Astra "bounced back from last month's launch failure with a groundbreaking success, deploying satellites in Earth orbit for the first time ever" with its low-cost two-stage launch vehicle, LV0009. (Watch video of the launch here.) It was a huge moment for Astra, which suffered a failure last month during its first-ever launch with operational payloads onboard.... Astra aims to break into the small-satellite launch market in a big way with its line of cost-effective, easily transported and ever-evolving rockets.

The company had conducted five orbital flights before today, four of them test missions from Kodiak. Astra reached orbit successfully on the most recent of those four test flights, a November 2021 mission that carried a non-deployable dummy payload for the U.S. Department of Defense. But the company stumbled on its next mission, its first with operational payloads onboard...

Astra investigators soon got to the bottom of both problems, tracing the fairing issue to an erroneous wiring diagram and the tumble to a software snafu. The company instituted fixes, clearing LV0009's path to the pad... LV0009 rose into the Alaska sky smoothly and ticked off its early milestones as planned. Stage separation and fairing deploy went well, and the rocket's second stage cruised to the desired orbit with no apparent issues. LV0009 deployed its payloads successfully about nine minutes after liftoff....

One of the known payloads is OreSat0, a tiny cubesat built by students at Portland State University in Oregon that is designed to serve as a testbed for future cubesats that will study Earth's climate and provide STEM (science, technology, engineering and math) outreach opportunities.

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