When the Kepler Space Telescope first began observing Tabby's Star—named for Tabetha Boyajian, the Yale postdoc who discovered it—it puzzled scientists. They identified a huge cluster of stuff orbiting around the star, which would make sense if the star was young. But it was old. That shouldn't have been possible. Could that mean that instead of rocky space debris, it was an alien megastructure? Hear the theories in the video below.
Could This Star Be The Location Of An Alien Megastructure?
It doesn't act like normal stars.
What Are Exoplanets?
Learn why the Kepler Space Telescope is searching the skies.
Key Facts In This Video
The first confirmed exoplanets were found orbiting a pulsar in 1992. 02:03
Hot Jupiters are gas giants that orbit very close to their star. 04:30
During a transit, a planet passes in front of its star, letting Earth astronomers detect a dip in the star's brightness. The amount of light blocked tells you the planet's size. 05:52
60 Billion Planets Could Harbor Life
We like those odds.
What Is The Habitable Zone?
Discover what makes scientists determine that one planet can harbor life and another can't.
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