Quoting the Google Developers blog: Developers around the world are constantly creating open source tools and tutorials but have a hard time getting them discovered. The content published often spanned many different sites - from GitHub to Medium. Therefore we decided to create a space where we can highlight the best projects related to Google technologies in one place - introducing the Developer Library.

The platform showcases blog posts and open source tools with easy-to-use navigation. Content is categorized by product areas; Machine Learning, Flutter, Firebase, Angular, Cloud, Android, with more to come.

What makes the Developer Library unique is that each piece featured on the site is reviewed, in detail, by a team of Google experts for accuracy and relevancy, so you know when you view the content on the site it has the stamp of approval from Google.
The "Dev Library" web site describes itself as "a showcase of what developers like you have built with Google technologies."

New submitter StellarThoughts writes: Scientists analyzed the second ever known interstellar object, a comet known as 2I/Borisov, and found some very unlikely results. Molecules of nickel and iron were being vaporized and drifting from the surface. Typically, nickel and iron vaporize when comets streak near the sun or aim directly for it, reaching temperatures exceeding 800 degrees Fahrenheit. And instead, this comet was a toasty -135 degrees F.

Comparing data with 20 other comets of varying chemical composition within the solar system, they spewed nickel and iron much like 2I/Borisov. Scientists have a few theories, including: "One possibility is that harsh ultraviolet light from the sun might break apart nickel-containing molecules in the comets." Scientists believe these traces were missed for so long because of the supposed unlikelihood of gaseous metals at such a low temperature.

sciencehabit shares a report from Science Magazine: Much as a smoke detector gives only a vague idea of where a fire is, current methods to detect smuggled nuclear materials are slow and imprecise. But a new technique that images nuclear materials based on the neutrons and gamma rays they shed can locate these dangers in record time, scientists report. The new technique -- neutron-gamma emission tomography (NGET) detection -- relies on detectors that emit light when struck by either a neutron or a gamma ray and measure the time of arrival with nanosecond precision. Suppose two detectors sit face to face, separated by 1 meter or so, and that a nucleus decays and emits a neutron that hits one detector and a gamma ray that hits the other. The difference in the arrival times, when accounting for the detailed physics of the nuclear decay process, defines a fuzzy, somewhat spherical shell in space in which the nucleus could have been. Timing many neutron-gamma ray pairs with several detectors produces a set of probability shells that should intersect at a point -- the location of the source. The ability to pinpoint a source may offer a "paradigm shift" in nuclear safeguards, the researchers say. NGET detectors might also be shrunk to fit on a drone. That offers "a really fascinating possibility" of quickly mapping radiological contamination at disaster sites like Fukushima or Chernobyl, they say. The findings appear in the journal Science Advances.

After years of seasonal pop-ups, Made by Google is finally opening a retail store for its hardware division. The first physical Google Store will be in Chelsea directly under one of the company's New York City offices. 9to5Google reports: At the Google Store, you'll be able to "browse and buy an extensive selection of products made by Google," including Pixel phones, Nest products, Fitbit devices, and Pixelbooks. You'll also be able to pick up online orders. The company says this is "an important next step in our hardware journey of providing the most helpful experience of Google, wherever and whenever people need it." "Throughout the store, visitors will be able to experience how our products and services work together in a variety of immersive ways, which we're excited to share more about when the doors open."

Besides shopping, there will be product support help from troubleshooting to cracked screen repairs and installations, as well as how-to workshops: "It doesn't matter whether you're a longtime Pixel user, are curious about our Nest displays or want to participate in one of the how-to workshops we'll offer throughout the year -- our team will be able to provide you with help that's specific and personalized to your needs." The first-ever physical Google Store will open this summer, with the company saying it will "explore and experiment with the possibilities of a physical retail space and build upon the experience."

A giant slab of ice bigger than the Spanish island of Majorca has sheared off from the frozen edge of Antarctica into the Weddell Sea, becoming the largest iceberg afloat in the world, the European Space Agency said on Wednesday. From a report: The newly calved berg, designated A-76 by scientists, was spotted in recent satellite images captured by the Copernicus Sentinel-1 mission, the space agency said in a statement posted on its website with a photo of the enormous, oblong ice sheet. Its surface area spans 4,320 square km (1,668 square miles) and measures 175 km (106 miles) long by 25 km (15 miles) wide. By comparison, Spain's tourist island of Majorca in the Mediterranean occupies 3,640 square km (1,405 square miles). The U.S. state of Rhode Island is smaller still, with a land mass of just 2,678 square km (1,034 square miles). The enormity of A-76, which broke away from Antarctica's Ronne Ice Shelf, ranks as the largest existing iceberg on the planet, surpassing the now second-place A-23A, about 3,380 square km (1,305 square miles) in size and also floating in the Weddell Sea.

China has released the first photographs taken by its Zhurong rover, which touched down on Mars late on May 14 as part of the country's Tianwen-1 mission. Space.com reports: The China National Space Administration (CNSA), which runs the mission, has released two Mars photographs taken by the rover: one in color and one in black and white. Both images show parts of the rover and its lander against a backdrop of Utopia Planitia, the expansive northern plain that Zhurong will explore during its mission.

The color image shows a view looking to the rear of Zhurong from a navigation camera above the rover's main deck. Solar arrays are visible, as are some surface rocks and features. The black and white image is from an obstacle avoidance camera at the front of the rover. It was captured with a wide-angle lens that also revealed a view of the Mars horizon in the distance, as well as two subsurface radar instruments on the rover itself. In addition to the photos from the surface, CNSA also released two short videos of the orbiter and Zhurong rover's landing capsule separating during Friday's maneuver. Both videos come from cameras on the orbiter and show the capsule pulling away.

Microsoft is launching the personal version of Microsoft Teams today. After previewing the service nearly a year ago, Microsoft Teams is now available for free personal use amongst friends and families. From a report: The service itself is almost identical to the Microsoft Teams that businesses use, and it will allow people to chat, video call, and share calendars, locations, and files easily. Microsoft is also continuing to offer everyone free 24-hour video calls that it introduced in the preview version in November. You'll be able to meet up with up to 300 people in video calls that can last for 24 hours. Microsoft will eventually enforce limits of 60 minutes for group calls of up to 100 people after the pandemic, but keep 24 hours for 1:1 calls. While the preview initially launched on iOS and Android, Microsoft Teams for personal use now works across the web, mobile, and desktop apps. Microsoft is also allowing Teams personal users to enable its Together mode -- a feature that uses AI to segment your face and shoulders and place you together with other people in a virtual space. Skype got this same feature back in December.

RockDoctor (Slashdot reader #15,477) writes: For a number of years the administrative process for giving asteroids names has had a worsening logjam. Important or "interesting" bodies (such as `Oumuamua, the first definitely interstellar object identified) would still get names rapidly assigned, but in the background myriads of unspectacular objects would persist with "names" based on their discovery date like "1981 GD1". Which is adequate for managing databases, but less than satisfactory for most humans.

A new publication from the "Working Group for Small Body Nomenclature", combines what used to be several steps into one stage. So now one can easily find that "1981 GD1" has the name "Rutherford", to commemorate one of the major scientists of the 20th century.

No doubt there will be complaints of an over-concentration on figures from Classical legend (22 of 179 names assigned), but eventually that mine will play out. Professional and amateur astronomers (34 and 30 names) are, unsurprisingly, the largest groups commemorated. Other scientists get a good showing (16, Rutherford included), along with memorials to teachers, observatories and universities. One architect and one astronaut (there isn't a bar on memorialising living persons) also get mentions, and modest numbers of sports stars, musicians and other cultural figures pad out the list. Chinese, Japanese and Taiwanese contributors have a significant input to this batch, along with a number of South American contributions and a fair number from smaller countries (Paul Erdos, for example, in the {dead+ white+ mathematical eccentrics} category). And one entry which I can only class as a joke — 1990 QX19 gets a name which should have been used years ago. Obviously you'll need to RTFA to see the joke, but RTFA-ing is an un-Slashdot activity.

Future numbers of the Bulletin will publish new batches of assigned names, and work away on the backlog. You still need to be the discoverer of a "small body" to submit a name proposal, but that step of the process is also under review. With about 22,000 of the currently-recognised million-plus objects with well-characterised orbits, there is no realistic prospect of running out any time soon — they are being found faster than they get named. But eventually you too could name a pathetic little mudball for someone you despise. Won't that be fun?

Slashdot reader boudie2 writes: Maritime Launch Services has secured financing it says will allow it to begin construction on a spaceport facility this fall and get its first launch off the ground in 2022. The first Cyclone 4M medium-class launch vehicle would take off in 2023.

The company wants to construct a rocket-launching site in Canso, Nova Scotia to send satellites into orbit for use in near-earth imaging, communications and scientific experiments. President and CEO Steve Matier stated the company has been approached by small satellite launchers, and MLS is considering hosting one of them for a first flight to orbit from the launch site as the facility scales up its operations. The company is expecting additional funding for the project will be secured through equity, debt and launch contracts.

Space startup Rocket Lab "lost a pair of satellites as the second stage of one of its Electron rockets failed to make it to orbit Saturday," reports CNET: After a successful liftoff from the company's New Zealand launch facility, something went wrong after the first stage booster separated from the smaller second stage carrying two satellites for Earth imaging company BlackSky. A live feed from the second stage showed that after it separated, it appeared to go into an uncontrolled tumble.

Commentators on the company's livestream reported that telemetry from the second stage had been lost and later the Rocket Lab Twitter feed confirmed the mission failure.

"An issue was experienced during today's launch, resulting in the loss of the mission," the company tweeted. "We are deeply sorry to our launch customers BlackSky and Spaceflight. The issue occurred shortly after stage two ignition..."

Rocket Lab reported that the booster made a successful parachute-assisted splashdown in the Pacific and a specially modified ship was en route to try to recover it.
"Rocket Lab has mostly been successful so far, with 17 of its missions reaching orbit," writes Engadget. Or, as CNET puts it, "This is the third failure out of 20 Rocket Lab launches and the second loss of mission in the past year."

In a statement, Rocket Lab CEO Peter Beck said "We will learn from this, and we'll be back on the pad again."

Which country will shoot the first movie in outer space? Russia is now "in a race with the United States to claim the achievement," reports NBC News.

36-year-old actress Yulia Peresild and 37-year-old director Klim Shepenko will complete Russia's cosmonaut-training program, ultimately taking two of the three seats aboard the October launch of Russia's Soyuz mission to the International Space Station: The Russian space agency, Roscosmos, announced Thursday that it had selected its crew to headline the film, which will be called "Challenge..."

Very little is known about the plot, which in many ways seems secondary to the spectacle. When Russia announced the project last year, Konstantin Ernst, the head of Russia's Channel One — which is working with Roscosmos on the film — said that it would not be a science fiction film, but a realistic depiction of near-term space travel. "It's a movie about how a person in no way connected with space exploration, due to various reasons and personal debt, ends up a month later in orbit," Ernst said in a September 2020 interview. "That's all I can tell you...."

The decision to fill the October Soyuz flight with a movie crew comes at an uncertain time for Russia's space program... In October, NASA paid for its final flight aboard Soyuz... Russia is now left to look for other means to help subsidize launch costs. One of those obvious sources — beyond funding from the state television network Channel One — is space tourism. Another Soyuz will launch in December, and rather than fill those seats with Russian cosmonauts, Moscow announced Thursday that two Japanese space tourists will take the ride.

China just successfully landed its first rover on Mars, becoming only the second nation to do so. Space.com reports: The Tianwen-1 mission, China's first interplanetary endeavor, reached the surface of the Red Planet Friday (May 14) at approximately 7:11 p.m. EDT (2311 GMT), though Chinese space officials have not yet confirmed the exact time and location of touchdown. Tianwen-1 (which translates to "Heavenly Questions") arrived in Mars' orbit in February after launching to the Red Planet on a Long March 5 rocket in July 2020. After circling the Red Planet for more than three months, the Tianwen-1 lander, with the rover attached, separated from the orbiter to begin its plunge toward the planet's surface. Once the lander and rover entered Mars' atmosphere, the spacecraft endured a similar procedure to the "seven minutes of terror" that NASA's Mars rovers have experienced when attempting soft landings on Mars.

A heat shield protected the spacecraft during the fiery descent, after which the mission safely parachuted down to the Utopia Planitia region, a plain inside of an enormous impact basin in the planet's northern hemisphere. Much like during NASA's Perseverance rover landing, Tianwen-1's landing platform fired some small, downward-facing rocket engines to slow down during the last few seconds of its descent. China's Mars rover, called Zhurong after an ancient fire god in Chinese mythology, will part ways with the lander by driving down a foldable ramp. Once it has deployed, the rover is expected to spend at least 90 Mars days (or about 93 Earth days; a day on Mars lasts about 40 minutes longer than a day on Earth) roving around on Mars to study the planet's composition and look for signs of water ice. Utopia Planitia is believed to contain vast amounts of water ice beneath the surface. It's also where NASA's Viking 2 mission touched down in 1976.

An anonymous reader quotes a report from The Guardian: Humanity's enormous emissions of greenhouse gases are shrinking the stratosphere, a new study has revealed. The thickness of the atmospheric layer has contracted by 400 meters since the 1980s, the researchers found, and will thin by about another kilometer by 2080 without major cuts in emissions. The changes have the potential to affect satellite operations, the GPS navigation system and radio communications.

The stratosphere extends from about 20km to 60km above the Earth's surface. Below is the troposphere, in which humans live, and here carbon dioxide heats and expands the air. This pushes up the lower boundary of the stratosphere. But, in addition, when CO2 enters the stratosphere it actually cools the air, causing it to contract. The shrinking stratosphere is a stark signal of the climate emergency and the planetary-scale influence that humanity now exerts, according to Juan Anel, at the University of Vigo, Ourense in Spain and part of the research team. "It is shocking," he said. "This proves we are messing with the atmosphere up to 60 kilometers."

The study, published in the journal Environmental Research Letters, reached its conclusions using the small set of satellite observations taken since the 1980s in combination with multiple climate models, which included the complex chemical interactions that occur in the atmosphere. "It may affect satellite trajectories, orbital life-times, and retrievals [...] the propagation of radio waves, and eventually the overall performance of the Global Positioning System and other space-based navigational systems," the researchers said.

The iconic spacefaring adventure "Mass Effect" is back today with "Mass Effect: Legendary Edition," a single, remastered version of all three games. From a report: There is no series like "Mass Effect" -- even when it comes to BioWare's other choice-driven RPGs like "Dragon Age." "Mass Effect" is a big ol' space adventure first and foremost, but it's also about loyalty, love, and tough calls. "Mass Effect" follows Commander Shepard -- a hero players can customize for looks and gender -- across three games as they wage war against a galactic threat known as the Reapers. Key choices carry through all three games, whether it's who survives, or who you ally yourself with.

"Mass Effect" (2007) is a classic sci-fi thriller, where Shepard races to stop a turncoat operative hungry for power.
"Mass Effect 2" (2010) is a miscreant adventure centered on building a ragtag squad, culminating in a final "suicide" mission where everyone's survival is on the line.
"Mass Effect 3" (2012) brings the trilogy to a close through a more somber, war-focused story about loss and consequence.

schwit1 shares a report from New Atlas: UCF researchers say they've trapped a sustained explosive detonation, fixed in place, for the first time, channeling its enormous power into thrust in a new oblique wave detonation engine that could propel an aircraft up to 17 times the speed of sound, potentially beating the scramjet as a hypersonic propulsion method. [...] Rotating detonation engines, in which the shockwaves from one detonation are tuned to trigger further detonations within a ring-shaped channel, were thought of as impossible to build right up until researchers at the University of Central Florida (UCF) went ahead and demonstrated a prototype last year in sustained operation. Due for testing in a rocket launch by around 2025, rotating detonation engines should be more efficient than pulse detonation engines simply because the combustion chamber doesn't need to be cleared out between detonations.

Now, another team from UCF, including some of the same researchers that built the rotating detonation engine last year, says it's managed a world-first demonstration of an elusive third type of detonation engine that could out-punch them all, theoretically opening up a pathway to aircraft flying at speeds up to 13,000 mph (21,000 km/h), or 17 times the speedThe UCF team claims it has successfully stabilized a detonation wave under hypersonic flow conditions, keeping it in place rather than having it move upstream (where it could cause the fuel source to explode) or downstream (where it would lose its explosive advantage and fizzle out into a deflagration). [...] Where a detonation typically lasts only a matter of micro- or milliseconds, the UCF team managed to sustain this one experimentally until the fuel was turned off after around three seconds. That's long enough to prove the device works [...]. The paper is open-access at PNAS.

Elon Musk-founded SpaceX is in the process of rolling out Starlink as a satellite internet provider around the world. As part of a new partnership, Google Cloud data centers will be home to key Starlink infrastructure in order to let enterprise users better access key services. 9to5Google reports: This partnership starts with SpaceX building Starlink ground stations inside Google data centers for "secure, low-latency, and reliable delivery of data" from existing fiber networks to space and back to end users. There are currently over 1,500 Starlink satellites in orbit, with more launching on a regular basis aboard Falcon 9 rockets. The end goal is to make cloud services, data, and applications available to businesses in rural or remote areas: "Connectivity from Starlink's constellation of low-Earth-orbit satellites provides a path for these organizations to deliver data and applications to teams distributed across countries and continents, quickly and securely." The first Google Cloud and Starlink customers will be able to benefit from this partnership in the second half of 2021.

Computer hardware maker MSI is warning gamers not to visit a website that's impersonating the brand and its graphics card overclocking software, Afterburner, to push malware. From a report: On Thursday, MSI published a press release warning of "a malicious software being disguised as the official MSI Afterburner." "The malicious software is being unlawfully hosted on a suspicious website impersonating as MSI's official website with the domain name https:// afterburner - msi [ . ] space," the company wrote. "MSI has no relation with this website or the aforementioned domain. [...] This webpage is hosting software which may contain virus, trojan, keylogger, or other type of malicious program that have been disguised to look like MSI Afterburner," the company added. "DO NOT DOWNLOAD ANY SOFTWARE FROM THIS WEBSITE."

The beauty and misery of private RSS feeds. An anonymous reader shares a report: There's only supposed to be one way to hear exclusive podcast content from sports host Scott Wetzel: by paying $5 a month to subscribe to his Patreon. But the show's also been available on a smaller podcasting app for free. In fact, leaked podcast feeds from dozens of subscription-only shows, including Wetzel's and The Last Podcast On The Left, are available to stream through Castbox, a smaller app for both iOS and Android, just by searching for them.

Two people in the podcast space tell me they've reached out to Castbox multiple times, only for the company to remove a show and then have it pop up again, an infuriating cycle for someone trying to charge for their content. "It's a little bit like playing whack-a-mole with them," says one source, who asked to remain anonymous because of their ongoing work in the space. Podcast subscriptions have existed for years, but they've gained wider attention this past month. Apple, which makes the dominant podcasting app, introduced in-app subscriptions with a button that lets people directly subscribe to a show from the app. Spotify announced its own subscription product, too, but with caveats -- the main one being there's no actual in-app button.

System76 today unveiled its newest product -- the "Launch Configurable Keyboard." It is a mechanical keyboard made in the USA with a focus on open source. The Launch has both open source firmware and hardware. Even the configuration software -- which runs on Linux, Windows, and macOS -- is open source. From a report: "With a wide swath of customization options, the Launch is flexible to a variety of needs and use cases. The keyboard's thoughtful design keeps everything within reach, vastly reducing awkward hand contortions. Launch comes with additional keycaps and a convenient keycap puller, meaning one can swap keys based on personal workflow preferences to maximize efficiency. Launch also features a novel split Space Bar, which allows the user to swap out one Space Bar keycap for Shift, Backspace, or Function to reduce hand fatigue while typing. Launch uses only three keycap sizes to vastly expand configuration options," says System76. The keyboard, which has a removable USB-C cable for connectivity, is priced at $285.

NASA and Houston-based Axiom Space have signed a "mission order" setting the stage for four civilians to visit the International Space Station early next year, the first fully commercial flight to the orbiting lab complex, agency managers said Monday. CBS News reports: Axiom's "AX-1" mission and an upcoming charity-driven flight to low-Earth orbit, both aboard SpaceX Crew Dragon capsules, represent "a renaissance in U.S. human spaceflight," said Phil McAlister, NASA's director of commercial spaceflight development. "I think that's the perfect word for what we're experiencing," he said of the growing commercial space market, which includes the anticipated certification of Boeing's CST-100 Starliner and upcoming sub-orbital flights by Blue Origin and Virgin Galactic. "This is a real inflection point, I think, with human spaceflight."

Axiom Space, led by Mike Suffredini, NASA's former space station program manager, announced last year that it plans to launch a four-man crew to the space station aboard a SpaceX Crew Dragon capsule. The launch is currently targeted for a January timeframe. Axiom Vice President Mike Lopez-Alegria, a former NASA astronaut and space station commander, will serve as commander of the AX-1 mission, which is expected to last about 10 days. Joining him will be Larry Connor, an American entrepreneur, Canadian investor and philanthropist Mark Pathy and Israeli investor Eytan Stibbe, a former fighter pilot.

Lopez-Alegria on Monday told reporters that the crew will participate in centrifuge training and flights to simulate weightlessness starting next week, followed by a camping trip to Alaska in July for "bonding and leadership training." Lopez-Alegria and Connor, the mission pilot, will begin SpaceX flight training shortly thereafter before the entire crew begins space station familiarization at the Johnson Space Center in October. [...] Axiom is not paying list price for the AX-1 mission, in part because planning began before the new price guidelines were determined and because the company will be providing services to NASA that the agency would otherwise have to pay for. The mission order announced Monday covers just $1.69 million. Additional agreements remain to be negotiated.