Scientists have found evidence that Mercury’s inner core is indeed solid and that it is very nearly the same size as Earth’s inner core.

Five years of data have significantly advanced scientists' knowledge of asteroids and comets in our solar system, as well as the stars and galaxies beyond.

During the spacecraft's last look at Titan, scientists gathered data that reveal what fills the moon's northern lakes — and how deep they are.

Following a nearly two-month journey, the first private robotic spacecraft to attempt a Moon landing is on track to meet its goal on April 11, and NASA is a partner in SpaceIL’s Beresheet mission

A black hole and its shadow have been captured in an image for the first time, a historic feat by an international network of radio telescopes.

Auroras at Jupiter's poles are heating the planet's atmosphere to a greater depth than previously thought — a rapid response to the solar wind.

Parker Solar Probe has successfully completed its second close approach to the Sun.

This site is among seven NASA sites nominated this year for a Webby. People's Voice voting is underway.

From precision GPS to batteries for one of the world’s first commercial all-electric airplanes, NASA technology turns up in nearly every corner of modern life.

The Southwest Research Institute will conduct the largest Hubble Space Telescope solar system program ever — a survey of the Kuiper Belt.

All the pieces making up NASA's Mars Helicopter have been put to the test.

Dust and ice from Saturn's vast rings accretes onto the moons embedded within and near the rings.