There are water worlds, lava planets, egg-shaped worlds, planets with multiple suns, and even planets with no sun at all! What can we learn from this weird, wondrous variety?

This artist's animation flies through the Kepler-20 star system, where NASA's Kepler mission discovered the first Earth-size planets around a star beyond our own. The system is jam-packed with five...

During the four years of science operations, the pointing precision of the spacecraft was controlled to within a few milli-arcseconds. That is the equivalent of keeping your gaze steady on a grain ...

The habitable zone is the distance from a star where one can have liquid water on the surface of a planet. If a planet is too close to its parent star, it will be too hot and water would have evapo...

The first planet to have its clouds mapped showed us what weather looked like on a planet outside our solar system.

Weighing in at 11 times Jupiter’s mass and orbiting its star at 650 times the average Earth-Sun distance, planet HD 106906 b is unlike anything in our own Solar System and throws a wrench in planet...

Lurking beyond our solar system, among the billions of stars and the exoplanets that orbit them, is another sort of Milky Way altogether. Our "Galaxy of Horrors" reveals the sinister science behind...

Learn more about cool tricks you can do in Eyes on Exoplanets.

This infographic explains how NASA's Spitzer Space Telescope can be used in tandem with a telescope on the ground to measure the distances to planets discovered using the "microlensing" technique.

This video is a trailer of the upcoming TESS mission.

For the first time since exoplanets, or planets around stars other than the sun, were discovered almost 20 years ago, X-ray observations have detected an exoplanet passing in front of its parent st...

Planets, including those like our own Earth, form from epic collisions between asteroids and even bigger bodies, called proto-planets. Sometimes the colliding bodies are ground to dust, and sometim...

A dusty planetary system (left) is compared to another system with little dust in this artist concept. Dust can make it difficult for telescopes to image planets because light from the dust can out...

NASA Associate Administrator Thomas Zurbuchen and TESS Project Scientist Padi Boyd discuss Kepler's legacy, the search for life and the big question: Are we alone?

This artist's concept shows the searing-hot gas planet WASP-12b (orange orb) and its star.

This graph shows the brightness variations of the brown dwarf named 2MASSJ22282889-431026 measured simultaneously by both NASA's Hubble and Spitzer space telescopes.

Once the third stage finishes its work, Kepler will have sufficient energy to leave the gravitational pull of Earth and go into orbit around the Sun, trailing behind Earth and slowly drifting away ...

The habitable zone is the distance from a star where one can have liquid water on the surface of a planet. If a planet is too close to its parent star, it will be too hot and water would have evapo...

Animation of a frozen planet, similar to worlds in our own solar system's Kuiper Belt.

This artist's concept shows planet KELT-9b orbiting its host star, KELT-9. It is the hottest gas giant planet discovered so far.

If life exists on some of the exoplanets that Kepler finds, it may exist in forms similar to what we see in some of Earth's most extreme conditions.

Overview of Kepler mission

This plot of data from NASA's Spitzer Space Telescope indicates the presence of molecules in the planet WASP-12b -- a super-hot gas giant that orbits tightly around its star.

For the first time since exoplanets, or planets around stars other than the sun, were discovered almost 20 years ago, X-ray observations have detected an exoplanet passing in front of its parent st...

A graphic of present and future exoplanet missions from space agencies and observatories around the world.