This phenomenon known as a "planet parade," will feature Mercury, Venus, Mars, Jupiter, Saturn, Uranus and Neptune all present at the same time along a line in the night sky on Friday, NASA says.

Scientists are reconsidering old information about Uranus. NPR's Scott Simon explains the problem with photos taken of the planet 38 years ago.

Our sun was born in a cosmic cradle with thousands of other stars. Astrophysicists say they want to find these siblings in order to help answer the question: Are we alone out there?

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.

Scientists are thrilled with the tiny asphalt-black rocks, and most of the sample hasn't even been revealed yet.

A NASA mission called Psyche is about to launch on a mission out to an unusual asteroid that's scientists believe is largely composed of metal.

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.

Astronomers pointed the James Webb Space Telescope at a common kind of planet that's bigger than Earth but smaller than Neptune. What they saw wasn't what they expected.

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.

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 has collected and is returning its first sample from an asteroid. The rocks and dust could help us understand potentially dangerous space rocks and the history of the solar system.