The Moon is Earth’s constant companion, the first skywatching target pointed out to us as children. We watch its face change as the month progresses, and see patterns and pictures in its geological ...

Charon, discovered in 1978, has the distinction of being the solar system's largest moon relative in size to the planet it ...

Charon, discovered in 1978, has the distinction of being the solar system's largest moon relative in size to the planet it ...

As much as over 90 percent of the dwarf planet's crust could be water ice, giving some insight, the researchers believe, into ...

How far away is the moon? But the distance between Earth and our closest neighbor is more nuanced than a single number. "The ...

Their research indicates that terrestrial planets like Earth can gravitationally capture moons, a potential explanation for ...

Using the James Webb Space Telescope, astronomers have discovered carbon dioxide and hydrogen peroxide at the surface of ...

Planetary rings don’t last forever, although they do exist for millions of years. The evidence for Earth’s possible ring is ...

The Moon, Williams and Zugger say, has an orbit around Earth that isn't as neatly aligned with the equator as you might ...

The James Webb Space Telescope detected carbon dioxide and hydrogen peroxide for the first time on the icy surface of Pluto's ...

NASA hopes to launch the Europa Clipper mission. It will then spend the next five years travelling 628.3 million kilometers ...

Pluto was long known as the ninth planet from the Sun. But after other similar objects were spotted in a region beyond ...