NASA's long-awaited and high-powered James Webb Space Telescope won't begin observations this year after NASA and its counterpart the European Space Agency (ESA) announced another launch delay.
The most powerful tool for scientists studying asteroids in the neighborhood around Earth is planetary radar, a technique astronomers have just used on their 1,001st asteroid to date.
Number 13 was good luck for NASA's Mars helicopter Ingenuity, as the tenacious little craft seamlessly completed its 13th flight on the Red Planet on Saturday (Sept. 4).
Comet Bernardinelli-Bernstein will be a spectacle for more than a decade to come, even though its discovery was a matter of luck.
The epic storm that swept across the eastern United States this week hit New Jersey so hard that satellites saw the damage from space.
The largest piece of Martian rock on Earth, weighing around 32 pounds, has gone on display for the first time, at a museum in Maine.
Astronomers may have captured the best view yet of matter colliding with the surface of a young star, findings that may shed light on what the sun looked like in its youth.
Perseverance has likely snagged its first-ever Red Planet sample, socking away a drilled-out core of a rock dubbed "Rochette."
Astronomers have uncovered evidence of explosions triggered by dead stars ramming into live stars, possible proof of a new type of supernova, a new study finds.
A new theory suggests dark matter may have come from quantum bags that got squished together in the early universe.
These planets are mostly made of gas, but a spaceship would have a rough time trying to get through a giant planet like Jupiter or Saturn.
A citizen scientist's lucky discovery of an eccentric brown dwarf illustrates the tantalizing borderline between stars and planets.
Vesta, a massive world in the solar system's asteroid belt, sports two huge trough features that have long puzzled scientists, and it doesn't look like the mystery will be solved anytime soon.