The president who built his fan base on isolationism is pivoting to a kind of imperialism that the U.S. hasn’t seen in decades.

In a daring vision for the future of space exploration, President Donald Trump, during his second inaugural address, declared that it is America’s ...

Hubble Space Telescope and MAVEN mission have been used to help unravel the mystery of Mars' escaping water. Credit: NASA ...

NASA Solar Dynamics Observatory captures sunspot AR3341 blast a powerful X1.1 solar flare. Credit: Space.com | footage ...