Planetary Science

NASA is reaching across more than 15 billion miles to rescue its malfunctioning Voyager 1 probe—but this hallowed interstellar mission can’t live forever

Earthlings are very lucky to see the spectacle of a total solar eclipse

The subsurface ocean of Jupiter’s moon Europa may have far less oxygen—and less potential for life—than previously believed, according to data from NASA’s Juno spacecraft

Eris and Makemake—two icy worlds beyond the orbit of Pluto—have seemingly fresh methane on their surface, a sign of unexpectedly hot interiors

New observations from the James Webb Space Telescope are exposing the pathways that water takes to reach terrestrial planets

Fragments from Asteroid 2024 BX1 have proven to be a rare meteorite type that helps reveal the early solar system's building blocks

A first look at materials from asteroid Bennu sparks speculation that the space rock was once part of an ancient, watery protoplanet

A surprisingly youthful ocean within Mimas, a tiny moon of Saturn, has big implications for the solar system’s history—and for finding life beyond Earth

We’re looking for another Earth. But how likely is it that we’ll find a duplicate of home?

NASA’s PACE mission aims to increase our understanding of Earth’s carbon cycle, pollution particles and ocean plankton

During close flybys of Jupiter’s volcanic moon Io, NASA’s Juno spacecraft captured stunning “bonus science” about the nightmarish world

The popular limit of a 100-kilometer altitude for the edge of space should probably be adjusted down to 80 km