Double sunsets on a distant world

Astronomers discover for the first time a planet circling two stars

By Stephen Ornes, 16:29 PM October 5, 2011





If you were stranded on a recently discovered planet called Kepler-16b and looked up during the day, you’d see an unusual light show: two glowing orbs making their way across the sky.


Here on Earth, we’re used to seeing only one sun rise in the morning and set in the evening. But on far-off Kepler-16b, there would be two sunsets and two sunrises, one for each star the planet orbits. And those two stars also orbit each other, which means they’d appear to change position in the sky.


“You’d g...

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