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'City killer' asteroid will narrowly miss the moon, James Webb Telescope reveals
The "city killer" asteroid 2024 YR4 won't hit Earth or the moon when it whizzes by in 2032, the latest James Webb Space Telescope observations confirm.
'Truly extraordinary': Mega-laser shooting at us from halfway across the universe is the brightest 'cosmic beacon' we've ever seen
Astronomers have discovered the brightest and most distant "megamaser" to date. The cosmic energy beam is shooting toward Earth from 8 billion light-years away and was spotted thanks to a weird space-time trick first predicted by Einstein.
Mysterious 'dots' discovered by Webb telescope may be the first stars in the universe on the verge of collapse
A new study suggests that "little red dots" spied by the James Webb Space Telescope could be the universe's short-lived first generation of gigantic stars, challenging an existing theory.
'Blood moon' total eclipse dazzles millions around the world (photos)
Here are the first images of the March 3 'blood moon' total lunar eclipse visible over North America, Australia, and eastern Asia.
March could be the best month for the northern lights for nearly a decade
March 2026 could be the best month for the northern lights until the mid-2030s, as celestial mechanics and solar activity combine for potentially potent results.
NASA telescope spots first alien 'astrosphere' around a sun-like star: Space photo of the week
The first bubble of hot gas seen around another star has been spotted around the "Moth," just 117 light-years away.
Science history: Stephen Hawking writes a tiny paper — and turns our understanding of black holes inside out — March 1, 1974
In 1974, physicist Stephen Hawking described the potential for tiny, primordial black holes that existed at the dawn of time to explode — and reshaped what we knew about these cosmic behemoths.
Giant string of organic molecules on Mars may be one of the best signs of life yet
A new NASA analysis concludes that it is "reasonable to hypothesize" that living things could have formed the odd organic molecules discovered on Mars.
The sun just experienced its first 'spotless days' in 4 years — but we're not in the clear yet
Earlier this week, the number of visible sunspots on our home star fell to zero for the first time in 1,335 days. This normally indicates a period of greatly reduced solar activity, but it's still too soon to relax, experts say.
Rubin Observatory alerts scientists to 800,000 changes in the sky in one night
The Vera C. Rubin Observatory sent scientists nearly 1 million astronomy alerts in one night, showing off changes in the sky. Eventually, the telescope is expected to reach 7 million alerts per night.
