There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

From lava worlds to gas giants, NASA says the variety of these worlds is staggering—and that signs of a further 8,000 distant ...

Uranus and Neptune are the two furthest planets in the Solar System and have been visited only once by human spacecraft – by ...

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

The solar system is a grand cosmic stage where each planet and moon plays a unique role in a story billions of years in the making. From Mercury’s shrinking surface and Venus’s runaway greenhouse ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

Space scientists look back on 30 years of exoplanet discoveries — from rows of massive ‘super-Earths‘ to worlds with ...

In the hunt for extraterrestrial life, we usually look for planets orbiting sun-like stars and icy moons. But there is ...

The striking thing about this is that repeating the procedure on the star turned up no evidence of carbon-based chemicals, ...

NASA's Artemis program is set to explore the Moon's south pole, a region of perpetual darkness holding clues to the solar ...

Get ready stargazers! The Orionid meteor shower peaks next week overnight on Oct. 20-21, bringing with it a flurry of ...