NASA chief Jared Issacman appears to be among those who support Pluto being reclassified as a planet. Could President Trump sign an executive order?

NASA’s planetary science program is still facing a funding shortfall that requires “strategic choices” about which missions to continue.

Four years ago, NASA purposely smashed a spacecraft into a small asteroid to see if they could deflect it—a test to prove humanity could protect Earth from threatening space rocks.

A rocky planet beyond gas dwarfs in LHS 1903 indicates that planetary systems form in unexpected ways.

We're starting to see just how exceptional our own solar system and its history is, as more exoplanets are discovered. A fourth exoplanet discovery in the LHS 1903 system made by ESA's CHEOPS mission ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Dusk at winter evening with stars and venus on the night sky at lake landscape with silhouettes trees and reflection (Sebastian ...

SpaceX launches, NASA's Artemis II mission and a planetary collision are among the latest news updates in FLORIDA TODAY's 321 ...