Neptune has long been depicted as a deeper, darker blue than its fellow ice giant Uranus, but a new study shows that both are a similar shade of light greenish blue.
On Earth, clouds and rain are made of water. But the James Webb Space Telescope has found that on a planet called WASP-107b, the rain and clouds are made of sand.
NASA's first effort to retrieve samples from an asteroid will send a capsule that contains extraterrestrial pebbles and dust plunging towards a Utah desert on Sunday.
For the first time, astronomers have caught a star in the act of swallowing a planet, providing a glimpse into how the sun may eventually eat up Earth.
A strange comet-like object discovered over five years ago was the first known visitor from another solar system. Its movement was so odd that scientists struggled to explain it, until now.
NASA's Double Asteroid Redirection Test slammed a spacecraft into an asteroid, directly altering its path through space. Scientists are still studying the space rock to learn more.
The first astronomer to discover moons around Jupiter was Galileo, back in the year 1610, but astronomers are still finding more and more moons around this gas giant.
NASA should send probes to the ice giant planet of Uranus and to a moon of Saturn where conditions could be right for life. Those are some of the recommendations in a new report to the space agency.
NASA is about to launch the first mission of its new planetary defense office. A spacecraft will attempt to knock a small asteroid off course by ramming into it.
