Scientists have discovered what they believe may be the largest impact crater in the entire solar system, with scars covering a vast portion of Jupiter's huge moon, Ganymede.
The bubble of charged particles that surrounds our solar system looks more like a deflated croissant than a comet, as traditionally envisioned, a recent study suggests.
Green, pulsing ultraviolet images of Mars' "nightglow" are illuminating circulation patterns in the Martian atmosphere.
This image of Saturn, snapped by the NASA/ESA Hubble Space Telescope, reveals the planet's swirling, turbulent atmosphere and striking, signature rings.
Lurking just below the atmosphere of Venus is a wall of acid clouds that whip around the planet at speeds close to that of a commercial air jet on Earth.
Marsquakes recorded by NASA's InSight mission offer the first direct evidence of key boundaries in the Martian interior, which could help planetary scientists understand how rocky planets are formed.
Methane and nitrogen glaciers on Pluto expand and "grow" in response to temperature changes on the dwarf planet, new research suggests.
Astronomers used the moon as a mirror to study Earth during a lunar eclipse, simulating a possible search for signs of extraterrestrial life.
Evidence of a neutron star hidden deep inside Supernova 1987A helps astronomers solve a 33-year-old mystery surrounding one of the brightest star explosions ever observed.
Tens of thousands of planets like Earth and Neptune might orbit the giant black hole at the center of the Milky Way.
The space roar, which was detected by NASA's ARCADE mission in 2006, makes space six-times louder than anyone was expecting — have we finally found the cause?
Thunderstorms on Jupiter are so strong that they create ammonia-rich hail known as "mushballs" that may fall from the sky.
NASA's car-size Curiosity rover celebrates eight years on the Red Planet today (Aug. 5), less than a week after the Perseverance rover took flight toward Mars.
When room and supplies are limited — like during space travel — you need to optimize for a different set of goals to meet the needs of the people you are trying to feed.
Tropical Storm Isaias battered the U.S. mid-Atlantic coast with torrential rains and powerful winds on Tuesday (Aug. 4) as NASA and NOAA satellites tracked the storm from space.
A new NASA space observatory could push planet-hunting forward at warp speed by gathering data up to 500 times faster than the venerable Hubble Space Telescope does.