Predecessors to dinosaurs missed the race to fill habitats emptied when nine out of 10 species disappeared during Earth's largest mass extinction 252 million years ago.
Two coronal mass ejections erupted from the sun on Wednesday night and Thursday morning as billions of tons of solar particles spewed from the fiery object in the center of our solar system at 5:30 pm Alaska time on Wednesday and 1:24 am Alaska time this morning.
Because it has no source of energy, a dead star — known as a white dwarf — will eventually cool down and fade away. But circumstantial evidence suggests that white dwarfs can still support habitable planets, says Prof. Dan Maoz of Tel Aviv University's School of Physics and Astronomy.
Cambridge, MA – In our solar system, only one planet is blessed with an ocean: Earth. Our home world is a rare, blue jewel compared to the deserts of Mercury, Venus and Mars. But what if our Sun had not one but two habitable ocean worlds?