A Planet's Telltale Signature
This diagram illustrates how a planet passing in front of a star blocks a tiny amount of starlight. In this case, it's a planet crossing the face of a nearby star called HD 209458, located 153 light-years from Earth in the constellation Pegasus. The dip in the center of the diagram represents a 1.7 percent drop in starlight over a three-hour period as the planet moves across the star's disk. By watching this eclipse, astronomers can confirm a planet's existence.
About the Image
|Release date:||31 October 2000, 07:00|
|Size:||481 x 365 px|
About the Object
|Type:||• Milky Way : Star : Circumstellar Material : Planetary System|