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Radar images show Europe's doomed ERS-2 satellite buckle and burn during final orbits of Earth
By Andrew Jones published
New radar images show surprise changes to the doomed ERS-2 spacecraft as it tumbled through Earth's atmosphere on Feb. 21.
Earth has extra moons, and they may hold the secrets of our solar system's past
By Kiley Price published
Earth's closest cosmic companions, known as 'minimoons' or 'quasi-moons', could hold the secrets to the history of our early solar system.
Bizarre 'Russian doll stars' predicted with Einstein's general relativity equations
By Robert Lea published
A new solution to Albert Einstein's theory of general relativity suggests hypothetical gravitational stars that look like black holes could be nested within one another.
February's full 'Snow Moon' rises this weekend. Here's why it's one-of-a-kind.
By Jamie Carter last updated
February's 'Snow Moon', the second full moon of 2024, will be the farthest from Earth this year and will appear the smallest in the sky when it rises on Saturday (Feb. 24).
Dead star smaller than Jupiter is one of the tiniest in the known universe
By Robert Lea published
The discovery or an ultra-tiny white dwarf could reveal how stars smaller than Jupiter are born.
Conjunction! How to see Venus and Mars side by side in the sky tonight
By Jamie Carter published
On Feb. 22, Venus and Mars will look like a cosmic colon as they appear side by side in the predawn sky.
Big, doomed 'TIE fighter' satellite seen from space just days before crashing back to Earth
By Brett Tingley published
The European Space Agency's ERS-2 Earth observation satellite was spotted in space as it prepares to make a fiery reentry into Earth's atmosphere on Feb. 21.
Space photo of the week: Astronomers make an 'artificial star' over Hawaii
By Jamie Carter published
Twinkling stars can throw off telescope observations. To correct that, observatories like the Gemini North telescope in Hawaii create 'artificial stars' with lasers to hone their equipment.
There may be a 'dark mirror' universe within ours where atoms failed to form, new study suggests
By Paul Sutter published
The invisible substance called dark matter remains one of the biggest mysteries in cosmology. Perhaps, a new study suggests, this strange substance arises from a 'dark mirror universe' that's been linked to ours since the dawn of time.
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