Skip to content Skip to navigation


Scientists use data from the New Horizons mission to illuminate the mystery.

Charles Q. Choi, Contributor

Observations of the region beyond the planet Neptune are giving astronomers fresh understanding of our solar system's history – and may reveal a new planet.

Peter Gwynne, Contributor

New observations point to processes driving away the atmosphere, rendering the planet's surface inhospitable to life.

Ramin Skibba, Contributor

New research explains the careful choreography of a multi-planet system called Kepler-233.

Abigail Malate, Staff Illustrator

Eclipses would be a thing of the past.

Marsha Lewis, Contributing Producer

In 130 million years, these planets will become dinner for their dying host star.

Cynthia McKelvey, Contributor

Researcher finds convincing evidence for water molecules inside Venus.

Jessica Orwig, Contributor

Subscribe to Planets/moons