The Kepler Space Telescope has notched another milestone discovery: double planets circling double stars in the constellation Cygnus, some 5,000 light-years away. It's the first time multiple planets have been found in a binary star system.

[,,,]
The new system, named Kepler-47, has one sunlike star and a companion about a third its size. The two planets—one three times bigger than Earth and the other slightly larger than Uranus—orbit around both stars in what is likely a delicate dance.

[,,...
Continue reading ...