The heart's brightness arises from sunlight reflection, while red patches, formed by tholins, showcase Pluto's atmospheric ...

On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just slightly smaller than Pluto, and it orbits the sun about three times farther ...

Discover the incredible story of NASA's New Horizons mission, from its 2006 launch aboard an Atlas V rocket to its historic 2015 flyby of Pluto. Learn how this space probe, utilizing a gravitational ...

NASA is quietly ending financial support for independent planetary science advisory groups, according to a letter posted to ...

NASA’s newly launched IMAP mission is set to tell us more about the boundary between our Solar System and interstellar space ...

This artistic impression shows the collision of two planetesimals in the young, evolving planetary system of Fomalhaut. NASA’s Hubble Space Telescope has captured the dramatic aftermath of two violent ...

(This photo of Pluto, taken in 2015, is from NASA's New Horizons space probe, which was launched in — you guessed it — 2006.) ...

For nearly a month, NASA has been scrambling to make contact with a spacecraft in orbit around Mars that abruptly fell silent. The space agency lost communication with the MAVEN probe (short for Mars ...

You can predict the Sun’s distant future by looking far beyond the Solar System. Across the Milky Way, astronomers study ...

A self-described "little farm girl" in the Jim Crow Era, Gladys West's complex and pioneering work for the U.S. Navy helped ...

These icy bodies orbit the sun just like the major planets, yet they follow their own rules, often traveling along elongated ...

Artemis II also serves as a bridge to Artemis III, the mission where NASA plans to land astronauts near the moon's south pole ...