Democratic Colorado Rep. Jason Crow said he worries the military is being politicized in Donald Trump's mass-deportation efforts.

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

This is a collection of photos chosen by AP photo editors.

A newly resurfaced NASA image has reignited speculation about the possibility of artificial structures on Mars. The ...

Trump administration and DC officials are aligned on redeveloping or tearing down obsolete federal buildings near The Mall to ...