Astronomers say they have found a second plausible candidate for a moon beyond our solar system, an exomoon, orbiting a world nearly 6,000 light-years from Earth. Scientific American reports: Called Kepler-1708 b-i, the moon appears to be a gas-dominated object, slightly smaller than Neptune, orbiting a Jupiter-sized planet around a sunlike star — an unusual but not wholly unprecedented planet-moon configuration. The findings appear in Nature Astronomy. Confirming or refuting the result may not be immediately possible, but given the expected abundance of moons in our galaxy and beyond, it could further herald the tentative beginnings of an exciting new era of extrasolar astronomy — one focused not on alien planets but on the natural satellites that orbit them and the possibilities of life therein.

Kepler-1708 b-i’s existence was first hinted at in 2018, during an examination of archival data by David Kipping of Columbia University, one of the discoverers of Kepler-1625 b-i, and his colleagues. The team analyzed transit data from NASA’s Kepler space telescope of 70 so-called cool giants — gas giants, such as Jupiter and Saturn, that orbit relatively far from their stars, with years consisting of more than 400 Earth days. The team looked for signs of transiting exomoons orbiting these worlds, seeking additional dips in light from any shadowy lunar companions. Then the researchers spent the next few years killing their darlings, vetting one potential exomoon candidate after another and finding each better explained by other phenomena — with a single exception: Kepler-1708 b-i. “It’s a moon candidate we can’t kill,” Kipping says. “For four years we’ve tried to prove this thing was bogus. It passed every test we can imagine.”

The magnitude of the relevant smaller, additional dip in light points to the existence of a moon about 2.6 times the size of Earth. The nature of the transit method means that only the radius of worlds can be directly gleaned, not their mass. But this one’s size suggests a gas giant of some sort. “It’s probably in the ‘mini Neptune’ category,” Kipping says, referring to a type of world that, despite not existing in our solar system, is present in abundance around other stars. The planet this putative mini Neptune moon orbits, the Jupiter-sized Kepler-1708 b, completes an orbit of its star every 737 days at a distance 1.6 times that between Earth and the sun. Presuming the candidate is genuinely a moon, it would orbit the planet once every 4.6 Earth days, at a distance of more than 740,000 kilometers — nearly twice the distance our own moon’s orbit around Earth. The fact that only this single candidate emerged from the analysis of 70 cool giants could suggest that large gaseous moons are “not super common” in the cosmos […].

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Source: Slashdot – Astronomers Have Found Another Possible ‘Exomoon’ beyond Our Solar System

An anonymous reader quotes a report from The Verge: The last eight years have been the eight hottest years on record, NASA and the National Oceanic Administration (NOAA) confirmed today. 2021 ranks as the sixth hottest year on record, the agencies said, as global average temperatures trend upward. Rankings aside, there were plenty of red flags throughout 2021 to show us how remarkable the year was for temperature extremes. “The fact is that we’ve now kind of moved into a new regime … this is likely the warmest decade in many, many hundreds, maybe 1000s of years,” says Gavin Schmidt, director of NASA’s Goddard Institute for Space Studies. “There’s enough change that it’s having impacts locally.”

In North America, those local impacts included epically bad summer heat, even for typically cool regions. In late June and early July, the Pacific Northwestern US and Western Canada struggled with record-smashing temperatures that buckled roads and melted power cables. In the desert further south, California’s Death Valley reached a blazing 130 degrees Fahrenheit (54.4 degrees Celsius) in July, potentially breaking the world record for the hottest temperature ever recorded on the planet — for the second year in a row. Across the Atlantic, Europe experienced sweltering heat, too. A reading of 119.8 degrees Fahrenheit (48.8 degrees Celsius) in Sicily might have broken the European record for maximum temperature. (The World Meteorological Organization is still working to vet those records.) All told, July 2021 was the hottest month humans have ever recorded, according to NOAA.

Heat trapped in the world’s oceans also reached record levels in 2021, according to research published this week. Ocean heatwaves are likely twice as common now as they were in the early 1980s, and they can be devastating for marine life and coastal communities. They kill coral, take a toll on fishing and crabbing industries, and can even make droughts worse onshore. Temperatures might have been even hotter in 2021, were it not for a La Nina event. La Nina is a recurring climate phenomenon defined by cooler-than-average waters in the eastern equatorial Pacific, which has predictable effects on weather patterns worldwide.

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Source: Slashdot – The Hottest Eight Years On Record Were the Last Eight Years

sciencehabit shares a report from Science.org: The most extensive and densely populated breeding colony of fish anywhere lurks deep underneath the ice of the Weddell Sea, scientists aboard an Antarctic research cruise have discovered. The 240 square kilometers of regularly spaced icefish nests, east of the Antarctic Peninsula, has astonished marine ecologists. “We had no idea that it would be just on this scale, and I think that’s the most fantastic thing,” says Mark Belchier, a fish biologist with the British Antarctic Survey and the government of South Georgia & the South Sandwich Islands, who was not involved in the new work.

In February 2021, the RV Polarstern — a large German research ship — was breaking through sea ice in the Weddell Sea to study marine life. While towing video cameras and other instruments half a kilometer down, near the sea floor, the ship came upon thousands of 75-centimeter-wide nests, each occupied by a single adult icefish — and up to 2100 eggs. “It was really an amazing sight,” says deep-sea biologist Autun Purser of the Alfred Wegener Institute, who led the ship’s underwater imaging. Sonar revealed nests extending for several hundred meters, like a World War I battlefield scarred by miniature craters. High-resolution video and cameras captured more than 12,000 adult icefish (Neopagetopsis ionah). The fish, which grow to about 60 centimeters, are adapted to life in the extreme cold. They produce antifreezelike compounds, and — thanks to the region’s oxygen-rich waters — are among the only vertebrates to have colorless, hemoglobin-free blood.

Including three subsequent tows, the team on the RV Polarstern saw 16,160 closely packed fish nests, 76% of which were guarded by solitary males. Assuming a similar density of nests in the areas between the ship’s transects, the researchers estimate that about 60 million nests cover roughly 240 square kilometers, they report today in Current Biology. Because of their sheer numbers, the icefish and their eggs are likely key players in the local ecosystem. […] The vast colony, the researchers say, is a new reason to create a marine protected area in the Weddell Sea, an idea has been proposed five out of the past 6 years to the intergovernmental treaty organization that regulates fisheries there.

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Source: Slashdot – World’s Largest Fish Breeding Grounds Found Under the Antarctic Ice

Yahoo Japan is telling its 8,000 employees they can work anywhere in the country — and even be flown into work when the job requires it — bucking the trend of companies looking to return workers to offices in the third year of the coronavirus pandemic. The Japan Times reports: The program takes effect April 1 and allows employees to commute by plane, which wasn’t previously an option, the company said in a statement Wednesday. While Yahoo is best known for its internet portal in Japan, it’s a unit of SoftBank Group’s Z Holdings, which also owns the Line messaging app and PayPay mobile payments service. Ninety percent of the company’s employees are now working remotely, according to President Kentaro Kawabe, who tweeted that an overwhelming majority of them said their performance has held steady or improved at home. “So we’re allowing Yahoo employees to live anywhere in Japan. This doesn’t mean we’re denying the benefits of the office — you’ll be able to fly in when needed,” he added.

Yahoo is setting a commuting budget of $1,300 per month per worker and lifting its previous daily cap. In-person communication will still be encouraged as the initiative is also aimed at bolstering morale and well-being, with social gatherings to be subsidized by [$44] per employee a month. The company has had an “office anywhere” remote work system in place since 2014, however it had capped the number of work-from-home days before the virus took hold to five days a month.

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Source: Slashdot – Yahoo Tells Japan Employees They Can Work Anywhere, Commute By Plane When Necessary

Former Twitter CEO and Block founder Jack Dorsey has announced plans to create a “Bitcoin Legal Defense Fund” with Chaincode Labs co-founder Alex Morcos and Martin White, who appears to be an academic at the University of Sussex. CoinTelegraph reports: The announcement was sent on a mailing list for Bitcoin developers, bitcoin-dev, at 13:45 UTC on Wednesday from an email address appearing to belong to Dorsey. The announcement stated the fund will help provide a legal defense for Bitcoin developers, who are “currently the subject of multi-front litigation.” “Litigation and continued threats are having their intended effect; individual defendants have chosen to capitulate in the absence of legal support,” the email stated, referencing open-source developers who are often independent and, therefore, susceptible to legal pressure.

The announcement went on to describe the Bitcoin Legal Defense Fund as a “nonprofit entity that aims to minimize legal headaches that discourage software developers from actively developing Bitcoin and related projects.” “The main purpose of this Fund is to defend developers from lawsuits regarding their activities in the Bitcoin ecosystem, including finding and retaining defense counsel, developing litigation strategy, and paying legal bills,” it stated. Initially, the fund will include volunteers and part-time lawyers for developers to “take advantage of if they so wish,” although, the email also states that “the board of the Fund will be responsible for determining which lawsuits and defendants it will help defend.” According to the email, the fund’s first project will be to take over the existing defense of Ramona Ang’s “Tulip Trading Lawsuit” against developers for alleged misconduct over access to a Bitcoin (BTC) fortune.

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Source: Slashdot – Jack Dorsey Announces Bitcoin Legal Defense Fund