The grainy photos show a tailless shape with canards slipping through the Nevada night, and the internet reached for aliens.

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

United States forces launched strikes against Iranian targets early Wednesday. These actions followed attacks on three ...