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Japan's Hayabusa2 shot an asteroid last night

Friday, February 22nd 2019 01:47 PM

Far from Earth, a tiny spacecraft punched an asteroid last night.It didn’t stay long. The touchdown was more of a quick tag, and Hayabusa2 stayed just long enough to fire a tiny bullet into the asteroid’s surface, in order to stir up material. Because Ryugu is so tiny (less than half a mile across), with hardly any gravity, even this small blow should have kicked up enough space dust...

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This star in Andromeda has exploded every year for millions of years

Friday, February 22nd 2019 01:45 PM

Astronomers have discovered a star in the Andromeda galaxy that has been regularly erupting for the past million years, leaving behind one of the biggest shells of ejected material scientists have ever seen. The new research, which was published last month in the journal Nature, not only marks the first discovery of such a super-remnant in another galaxy, it also paves the way for...

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Astronomers might soon get more glimpses into the early universe

Tuesday, February 12th 2019 06:24 PM

For decades, scientists have been on the hunt for brilliant galaxies in the distant universe. These quasars were first noticed for being spectacularly bright – some of the most energetic objects ever discovered. But astronomers think many of them – in fact, the vast majority from the early universe – may be in hiding, camouflaged behind much closer galaxies.Because of t...

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Scientists finally confirm a big theory about solar system formation

Tuesday, February 12th 2019 06:22 PM

Planets, stars, and black holes all grow by consuming material from a spinning disk. While these disks may differ in size, they’re all mostly dependent on the mighty force of gravity, which keeps them spinning around the central mass. Gravity lets small clumps grow into bigger clumps. But it’s not enough to pull the whole disk into the middle in one giant clump, because angular m...

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What time is it on Saturn? We finally know

Monday, February 11th 2019 03:47 PM

The time on Saturn For years, the length of a day on Saturn has remained an unsolved puzzle to frustrated astronomers. But now, a graduate student from the University of California Santa Cruz believes that he has finally solved the mystery. Christopher Mankovich used the planet’s rings to determine that a day on Saturn lasts for 10 hours, 33 minutes, and 38 seconds. Being a...

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NASA honors fallen astronauts with Day of Remembrance 34.7K NASA honors fallen astronauts with Day of Remembrance

Friday, February 8th 2019 12:16 PM

Every year, NASA recognizes astronauts who lost their lives in the pursuit of spaceflight with an official Day of Remembrance. This year, it’s celebrated February 7. And NASA Administrator Jim Bridenstine will lay a wreath at the Tomb of the Unknown Soldier in Arlington National Cemetery. Another wreath-laying ceremony will also happen at Kennedy Space Center’s Space Mirror Memorial....

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