Scientists have spent 12 years arguing over how to classify Pluto, and a recently published paper offers a new — but surprisingly old — reason for restoring the object's planetary status. The new ...

A new SwRI-led paper highlights the scientific progress made in understanding the evolution of terrestrial planets, including the effects of late large impacts on pre-existing modes of tectonics. For ...

John Eklund, a teacher at Red Lake Elementary School, has driven a spaceship to several planets. He has also encountered aliens and had to be saved a few times by students. If this sounds like a story ...