Discoveries

Last update: June 19, 2018
  • 3,735
    Confirmed

    Planets that have been validated by two or more discovery methods.

  • 2,723
    NASA Candidates

    NASA mission discoveries that could be planets, but are unconfirmed.

  • 2,787
    Planetary Systems

    The number of stars with confirmed planets.

Glossary

News and Features

The Search for Life

Finding potential life-bearing worlds among the stars is NASA's next big challenge.

The Search for Life

Finding potential life-bearing worlds among the stars is NASA's next big challenge.

Exoplanets 101

What is an exoplanet? Where are they located and how do we find them?

Habitable Zones

Where's the best place to look for life-bearing planets among the stars?

Life Signs

Find evidence of life on distant planets will require advanced technology and a little luck.

Inventing the Future

Learn about the futuristic technology NASA is developing to explore alien worlds.

Exoplanet Exploration Program

NASA's science, technology and mission management office for the exploration of exoplanets. The program's primary goals, as described in the 2014 NASA Science Plan, are to discover planets around other stars, to characterize their properties and to identify planets that could harbor life.