NASA will explore two different strategies for fetching Mars rocks collected by the Perseverance rover, and there's a chance ...

The early Earth was an extreme place. Asteroids pommeled the surface. Volcanoes spewed lava and carbon dioxide. The thick, ...

Based on the history of life here on earth, at least one prominent paleontologist thinks that complex life in the cosmos is ...

If you like the smell of spring roses, the sounds of summer birdsong, and the colors of fall foliage, you have the stabilization of the ozone layer to thank for it. Located in the stratosphere, where ...

"Even if a planet is in the habitable zone, if it has too small a water inventory, it transitions to an uninhabitable state." ...