Venus is the hottest planet in the solar system due to its thick carbon dioxide atmosphere, trapping heat as part of a ...

"What surprised us, at the end, was how effective this type of impact could be in explaining Mercury's unusual structure ...

Meet the author: Dr. Phil Plait is an astronomer, author, and science communicator with a PhD in astronomy at the University ...

Turns out, it's as tough to drop inward into the inner solar system, as it is to head outward. The problem stems from losing ...