If two black holes tango in space but astronomers cannot see them, can we still admire their flashy dance moves?
Budget cuts may force NASA's Curiosity rover mission to slam on the brakes just as it's reaching its highly anticipated home stretch.
The famed Martian meteorite Allan Hills 84001 contains 4-billion-year-old organic molecules, the carbon-containing building blocks of life as we know it, a new study suggests.
The little chopper that will launch toward the Red Planet this summer with NASA's Mars 2020 rover Perseverance is named Ingenuity.
Comet ATLAS has disintegrated before our very eyes, and two new images from the Hubble Space Telescope show the comet has crumbled into 25 pieces.
Is space-time ultimately smooth at the tiniest of scales, or something else? It seems impossible to measure, but researchers are beginning to look down. Deep down.
An asteroid about the size of a car gave Earth a close shave Tuesday (April 28), just ahead of a flyby of another big space rock, according to NASA officials.
You can take the measure of the big space rock that will zoom by Earth early Wednesday morning (April 28), thanks to radar views from the Arecibo Observatory.
A big asteroid will safely fly by Earth early tomorrow morning (April 29), and you can watch it approach our planet in real time tonight with a free webcast from the Slooh online observatory.
The huge "potentially hazardous" asteroid 1998 OR2, which will safely fly by Earth on April 29, appears to have brought its own face mask for its close encounter with our pandemic-ridden planet.
Don't be fooled by any hyped-up headlines you may have read: This week's asteroid flyby poses no threat to Earth or anything on it.
Skywatchers had high hopes that a comet called ATLAS would light up the night sky this spring, with forecasts suggesting it could become bright enough to see with the unaided eye.
The Hubble Space Telescope's contributions extend far beyond the scientific sphere, into the everyday lives of regular people around the world.
The mystery behind why the atmosphere of Venus spins much faster than the planet's surface may finally be solved, a new study finds.
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