Billions of stars orbit the center of our galaxy, and many of these stars have at least one planet orbiting them. But not all stars belong to a galaxy, and not all planets orbit a star. Rogue planets are worlds that drift untethered to any star, and experts estimate that there are billions of them in our galaxy alone.
What Are Rogue Planets?
Explore how we go about discovering these lonely worlds.
How Planets Go Rogue
Did rogue planets leave their home stars, or were they never tethered to one in the first place?
Discover the different methods astronomers use to find planets outside our solar system.
Key Facts In This Video
The way we discovered the first planets outside our solar system was with the Doppler Technique. 00:25
Actually trying to see a planet would be like standing on Hawaii and looking at flame flickering near a lighthouse in California. 02:26
Every 30 minutes, Kepler takes a measurement of the brightnesses of 160,000 stars. 03:41
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