Trump again called on the United States to send astronauts to Mars in his speech to a joint session of Congress.

A photograph accurately shows a U.S. "distress" flag hung upside down from the side of El Capitan in Yosemite National Park ...

Demonstrators unfurled the flag against El Capitan to protest the Trump administration's cuts to the National Park Service.

Flags all around Iowa will be lowered to half-staff Friday to remember a former Iowa Senate president who died this week.

We are going to conquer the vast frontiers of science and we are going to lead humanity into space and plant the American ...

The Department of the Interior told USA TODAY it was aware of the "unauthorized and inappropriate" display, which was eventually taken down.