Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
What's the story with these ads on Slashdot? Check out our new blog post to find out. ×
Space

Submission + - Hot Planet Cools Off Its Own Sun->

sciencehabit writes: What do you do if you're a hot Jupiter and want to cool off? Why, you use your gravity to lift up the surface of your sun, cooling it and creating a dark spot on the star. In a forthcoming issue of The Astrophysical Journal Letters, astronomers will report using the Kepler spacecraft to observe the brightness of a star in the constellation Cygnus more than a million times. Named HAT-P-7, this star has a hot Jupiter—a giant planet orbiting close-in —which other scientists found before NASA launched the spacecraft. The world's gravity raises the star's surface away from its hot center, causing part of the surface to cool by just a fraction of a degree Kelvin and produce a dark spot that lags behind the planet's position by a few hours. If confirmed, this discovery is the first time astronomers have ever seen planet-induced "gravity darkening" and demonstrates Kepler's remarkable ability to detect even the subtlest of stellar signals.
Link to Original Source
This discussion was created for logged-in users only, but now has been archived. No new comments can be posted.

Hot Planet Cools Off Its Own Sun

Comments Filter:

Whom computers would destroy, they must first drive mad.

Working...