Daily News update on – Science


December 23, 2021

NEWS

Spaceflight Now

Experiments, holiday gifts delivered by SpaceX to International Space Station

A SpaceX Dragon cargo capsule pulled into port at the International Space Station Wednesday, a day after launch from Florida’s Space Coast with 3.2 tons of experiments, holiday gifts, and external instruments developed by NASA and the U.S. military to help …

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Space.com

This record-breaking black hole eruption could cover 16 full moons in the sky

The black hole at the center of the Centaurus A galaxy has been imaged in unprecedented detail. (Image credit: Ben McKinley, ICRAR/Curtin and Connor Matherne, Louisiana State University.).

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Space.com

James Webb Space Telescope reaches launch pad for Christmas liftoff

The massive observatory is due to launch on Saturday (Dec. 25).

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Space.com

Why NASA’s James Webb Space Telescope will orbit nearly 1 million miles from Earth

Lagrange points are gravitationally stable spots where spacecraft can more or less “park,” maintaining the same relative position without expending much fuel. But Webb isn’t going to L2 for propellant conservation. It’s going there to stay cool.

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Space.com

Mars and Earth likely formed from collisions of moon-sized rocks

Meteorites provided answers to a long-standing mystery about the origins of inner solar system planets. An artist’s depiction of an asteroid hitting Earth. (Image credit: NASA/Don Davis). Earth and Mars likely arose from collisions between giant …

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The Verge

What to expect from NASA’s James Webb Space Telescope launch

On Christmas Day, NASA is gifting astronomers one of the greatest presents it can give by launching the most powerful space telescope ever created. Called the James Webb Space Telescope, or JWST, the space observatory is meant to be the successor to …

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The New York Times

In an Evolutionary Race to Dominate the Seas, Ichthyosaurs Were the Winners

About 246 million years ago, a sea lizard with a skull the size of a grand piano died in the ancient ocean that is now Nevada. It was an ichthyosaur, and its body was most likely the size of a modern sperm whale. Although ichthyosaurs and whales are …

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Phys.Org

The earliest atmosphere on Mercury

Early planetary magma oceans aren’t unusual, explained Lindy Elkins-Tanton, director of the School of Earth and Space Exploration at Arizona State University. “We think all rocky planets have one or more—maybe several—magma oceans as they form.

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CNN

Giant marine reptile skull discovery reveals new evolutionary theories

The giant ichthyosaur fossil — with a skull measuring almost two meters (6.6 feet) in length, an estimated body length of more than 17 meters (55.7 feet) and a weight of 45 tonnes – was found in Nevada. Ichthyosaurs are large extinct marine reptiles that …

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CNET

More than 70 rogue planets are wandering the universe, all alone

Each is about the mass of Jupiter, and they’re located around the Upper Scorpius and Ophiuchus constellations, a star-forming area relatively near our sun. Despite the planets’ proximity to such stellar forces, they don’t orbit a star of their own.

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