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The "invisible" world Kepler-19c, seen in the foreground of this artist's conception, was discovered solely through its gravitational influence on the companion world Kepler-19b - the dot crossing the star's face. Kepler-19b is slightly more than twice the diameter of Earth, and is probably a "mini-Neptune." Nothing is known about Kepler-19c, other than that it exists. Credit: David A. Aguilar (CfA)

You’ve got to be kidding me.

@NASAKepler
Kepler data reveals two New worlds … and ONE is INVISIBLE?

What? How could I not click the Twitter link.

Scientists from the Harvard-Smithsonian Center for Astrophysics (CfA) yesterday announced that NASA’s Kepler spacecraft:

Has spotted a planet that alternately runs late and early in its orbit because a second, “invisible” world is tugging on it.

Um.

This is the first definite detection of a previously unknown planet using this method. No other technique could have found the unseen companion.

If you recall, it was also the CfA that discovered the planet darker than coal.

What do you make of this? I know one thing: I got a lot more research to do. Until then, read more about the planet here.

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