According to an alternative model of how intelligent life emerges on planets like Earth, the existence of aliens—and human ...

Researchers present an alternative to the long-held “hard steps” theory to explain the evolution of complex life, suggesting ...

Stargazers in parts of the U.S. have a fleeting opportunity this month to catch a rare celestial phenomena—a "parade" of ...

When was Pluto discovered? Pluto was discovered in 1930 by Clyde Tombaugh, an American astronomer at the Lowell Observatory in Flagstaff, Arizona. Cold, dark and distant, it was n ...