https://arstechnica.com/?p=1827280 preview's
Study: Leidenfrost effect occurs in all three water phases: Solid, liquid, and vapor

But there's a much higher threshold of 550° C for levitation of an ice disk to occur.
2022-01-21 19:30:04
https://arstechnica.com/?p=1827676 preview's
Unvaccinated 5X more likely to get omicron than those boosted, CDC reports

Real-world data shows booster doses are standing up to omicron.
2022-01-21 18:45:05
https://arstechnica.com/?p=1827654 preview's
Two cannabinoids have opposing effects on SARS-CoV-2 in culture

In early tests, CBD inhibits the virus, but THC blocks this effect.
2022-01-21 18:15:02
https://www.universetoday.com/154139/curiosity-sees-a-strong-carbon-signature-in-a-bed-of-rocks/ preview's
Curiosity Sees a Strong Carbon Signature in a Bed of Rocks

Carbon is critical to life, as far as we know. So anytime we detect a strong carbon signature somewhere like Mars, it could indicate biological activity. Does a strong carbon signal in Martian rocks indicate biological processes of some type? Any strong carbon signal is intriguing when you’re hunting for life. It’s a common element … Continue reading "Curiosity Sees a Strong Carbon Signature in a Bed of Rocks" The post Curiosity Sees a Strong Carbon Signature in a Bed of Rocks appeared first on Universe Today.
2022-01-21 16:30:03
https://arstechnica.com/?p=1826459 preview's
Machine to melt Moon rocks and derive metals may launch in 2024

"These are the kinds of things that America needs to do to remain a leader in space."
2022-01-21 13:30:03
https://arstechnica.com/?p=1827402 preview's
Researchers date the oldest known human skull at 233,000 years

Omo I is the oldest skull with clearly Homo sapiens features, including a chin.
2022-01-21 10:45:03
https://www.universetoday.com/154144/bad-weather-postpones-ingenuitys-19th-flight-on-mars/ preview's
Bad Weather Postpones Ingenuity’s 19th Flight on Mars

The first flight of 2022 for the Ingenuity Helicopter has been delayed due to a regional dust storm on Mars. Mission planners had originally targeted January 5 for the tiny helicopter’s 19th flight, but they needed to push back the flight when orbital images and weather instruments on the Perseverance rover indicated a worsening weather … Continue reading "Bad Weather Postpones Ingenuity’s 19th Flight on Mars" The post Bad Weather Postpones Ingenuity’s 19th Flight on Mars appeared first on Universe Today.
2022-01-21 10:15:04
https://www.wired.com/story/what-happens-if-a-space-elevator-breaks preview's
What Happens If a Space Elevator Breaks

These structures are a sci-fi solution to the problem of getting objects into orbit without a rocket—but you don’t want to be under one if the cable snaps.
2022-01-21 09:15:04
https://www.wired.com/story/europe-nuclear-power-plants preview's
Europe Is in the Middle of a Messy Nuclear Slowdown

Germany has almost finished phasing out nuclear plants, and aging infrastructure is leading neighbors down the same path. But will green energy goals suffer?
2022-01-21 07:15:03
https://science.slashdot.org/story/22/01/20/2358258/nasas-swift-observatory-may-have-suffered-an-attitude-control-failure?utm_source=rss1.0mainlinkanon&utm_medium=feed preview's
NASA's Swift Observatory May Have Suffered An Attitude Control Failure

After 17 years of relatively smooth sailing, NASA's Neil Gehrels Swift Observatory has entered safe mode after detecting a "possible failure" in one of the six reaction wheels used to change attitude. Engadget reports: While it's not clear exactly what (if anything) went wrong, NASA has halted direction-based scientific observations until it can either give the all-clear or continue operations with five wheels. This is the first potential reaction wheel problem since the Swift Observatory began operations in February 2005, NASA said. The rest of the vehicle is otherwise working properly. The Swift Observatory has played an important role in astronomy over the past two decades. It was primarily built to detect gamma-ray bursts and detects roughly 70 per day. However, it has increasingly been used as a catch-all observer across multiple wavelengths, spotting solar flares and hard-to-find stars. NASA won't necessarily run into serious trouble if Swift has a lasting problem, but it would clearly benefit from keeping the spacecraft running as smoothly as possible. Read more of this story at Slashdot.
2022-01-21 02:15:03