The planet orbits its star, Gliese 12, every 12.8 days at a distance of just 7% of the Earth-Sun distance.As a result, it receives approximately 60% more energy from its star compared to what ...

An astronomer born 100 years ago is coming into his own. This week, we celebrated the 100th birthday of Wilhelm Gliese — pronounced “Gleesa” — an obscure German astronomer. Over the next ...

Gliese-581d is one of five planets to be discovered orbiting red dwarf star Gliese 581. It is bigger than 581g, with a mass at least seven times Earth's and twice as big in size. The planet orbits ...