Their journeys have been nothing short of remarkable. Voyager 2 was the first spacecraft to fly past all four planets in the outer solar system, while both have discovered multiple moons around them.

This week, revisit what you know about Uranus, explore the far side of the moon, rediscover the famed fossil known as Lucy, ...

NASA's Juno spacecraft has sent back new, eye-catching images of Jupiter, capturing intricate views of the planet's turbulent ...

Earth, between sweltering Venus and frozen Mars, formed and orbits within a band where water could persist in solid, liquid, and gaseous phases. Mars had surface water, but not as much as Earth, and ...

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

A mini moon that will bid farewell to Earth soon may in fact be a small hunk of the big moon — the one that has loomed far ...

The planet Jupiter has no solid ground – no surface, like the grass or dirt you tread here on Earth. There’s nothing to walk ...

Solar and cosmochemical data indicate high levels of carbon, nitrogen, and oxygen in the Sun. Researchers have unveiled a new ...

Some minerals in lava could suggest water is nearby.

The Arecibo Message as it appears when its 1,679 bits are properly aligned on a grid (left), an annotated illustration ...

The moon has a global dichotomy, with its near and far sides having different geomorphology, topography, chemical composition ...

By probing chemical processes observed in the Earth's hot mantle, scientists have started developing a library of basalt-based spectral signatures that not only will help reveal the composition of ...