Go to start pageGalaxy StoryAstrometrySearch for Planets

What will I find?
We can discover tiny planets at great distances because their gravitational pull affects the position of the star that it orbits. Radial spectroscopy is one method for detecting that movement. Click the magnifying glass below to explore this simulation or choose any of the stories listed on the left if you want to find out more about our search for distant planets and life in the universe.


Radial Velocity Method

ESA Science Home page

See also:

Gaia Home page