Solar System

A 3D map of our cosmic neighborhood has revealed hot and cold regions as well as an "escape tunnel" from our local bubble.

Pluto was demoted from a planet to a dwarf planet in 2006. So why is its status still so controversial today?

How old is Earth? Our planet's age is known from a variety of sources, from rocks on our own planet to ones from the moon.

In the coming weeks, NASA's Europa Clipper will take off on a long journey to Jupiter's moon Europa. The icy moon could potentially host alien life — and there's only one way to find out.

The moon's distance from Earth changes depending on where it is in its elliptical orbit.

From the moment of the Big Bang, everything in the universe has kept moving, but why is that?

Voyager 2, NASA's longest-running mission, explored Neptune during a historic encounter on Aug. 25, 1989, sending back humanity's first close-ups of the planet.

What is the solar system's coldest spot and how does the coldest place on Earth compare?

A new James Webb Space Telescope analysis of the giant, metal-rich asteroid Psyche reveals signs of hydration in the form of rust. This could help pin down the mysterious rock's origins.

The European Space Agency's Gaia space telescope has found evidence of more than 350 previously unknown moons orbiting asteroids within our solar system.