Radial Velocity

The radial velocity method uses the Doppler effect to measure the motion of a star caused by the gravitational pull of a planet. By measuring the frequency shifts of the star's light, astronomers can calculate the planet's mass and orbit.

55 Cancri b

A giant planet composed mainly of gas.

55 Cancri c

A giant planet composed mainly of gas.

55 Cancri d

A giant planet composed mainly of gas.

55 Cancri e

A lava world with sparkling skies.

55 Cancri f

A giant planet composed mainly of gas.

GJ 15 A b

A neighboring world with an abundance of strange properties.

GJ 15 A c

Part of the closest planetary system to Earth.

GJ 436 b

A close exoplanet with a secret: a lack of methane on this hot world.

GJ 1132 c

A potentially rocky world, larger than Earth.

HD 17156 b

A giant planet composed mostly of gas; named for Alaskan river.

HD 189733 b

A giant planet where it rains glass.