"It's not practical to talk about powering a planet with energy stored in batteries. It's more reasonable to store energy in the chemical bonds of molecules." - Tom Meyer
Australian researchers say their new technique will help them find sites where populations of organisms can potentially survive, as rainfall continues to decline.
These sun-like stars that are moving at speeds of more than a million miles per hour relative to our galaxy - fast enough to escape its gravitational grasp.
A mysterious gas cloud with three times Earth's mass is spiraling toward the supermassive black hole at the core of our Milky Way galaxy. Expect to hear about the encounter in the coming months.