"As the sun becomes a red giant, the habitable zone will move to around Jupiter and Saturn's orbit, and many of these moons will become ocean planets," Zhang said. "I think, in that case ...

The red giant, roughly 1.12 times the mass of our Sun, orbits the white dwarf every 227 days. The two stars are separated by only 0.54 astronomical units, about the same as the distance from the ...

Stars like our sun fuse hydrogen in their cores into ... At this stage, the star becomes a large red giant. Because a red giant is so large, its heat spreads out and the surface temperatures ...