Planet cannibalism is common, says cosmic 'twin study'
How stable are planetary systems? Will Earth and its seven siblings always continue in their steady celestial paths, or might we one day be randomly ejected from our cosmic home?
How stable are planetary systems? Will Earth and its seven siblings always continue in their steady celestial paths, or might we one day be randomly ejected from our cosmic home?
Astronomy
Mar 23, 2024
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Titan is the second-largest moon in the solar system and the only one with a dense atmosphere. At the top of this atmosphere, rich in nitrogen and methane, the sun's radiation produces a great diversity of organic molecules, ...
Astronomy
Mar 11, 2024
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68
Fresh U.S. intelligence circulating in Congress reportedly indicates that Russia is developing an anti-satellite weapon in space with a nuclear component.
Political science
Feb 19, 2024
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In his youth, NASA technologist Les Johnson was riveted by the 1974 novel "The Mote in God's Eye," by Jerry Pournelle and Larry Niven, in which an alien spacecraft propelled by solar sails visits humanity. Today, Johnson ...
Space Exploration
Feb 13, 2024
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11
For the first time since 1972, NASA is putting science experiments on the moon in 2024. And thanks to new technologies and public-private partnerships, these projects will open up new realms of scientific possibility. As ...
Space Exploration
Feb 9, 2024
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30
University of Oregon researchers are adding new details to the geological history of the iconic Columbia River Gorge, a wide river canyon that cuts through the volcanic peaks of the Cascades along the border between Oregon ...
Earth Sciences
Jan 8, 2024
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196
As astronomers have begun to gather data on the atmospheres of planets, we're learning about their compositions and evolution. Thick atmospheres are the easiest to study, but these same thick atmospheres can hide the surface ...
Planetary Sciences
Dec 27, 2023
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42
A team of astrophysicists led by Lauren Weiss, assistant professor in the Department of Physics and Astronomy at the University of Notre Dame, created the first-ever catalog of small, Earth-like planets with Jupiter-like ...
Astrobiology
Dec 19, 2023
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133
Positive tipping points must be triggered if we are to avoid the severe consequences of damaging Earth system tipping points, researchers say. With global warming on course to breach 1.5°C, at least five Earth system tipping ...
Earth Sciences
Dec 15, 2023
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8
A young boy is forced to sit at a dinner table with grown-ups talking endlessly about grown-up stuff. He's bored. He finds it hard at first, to push with his feet against the table frame, tip his chair onto its back legs, ...
Environment
Dec 9, 2023
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42