Steven Spielberg returns to sci-fi with a somber UFO invasion flick this summer ...

Dragonfly will explore the giant Saturn moon Titan by air, helping scientists learn about the proto-ingredients of life on the satellite's hazy surface.

Humans were not designed for space. Ironically, because we insist on going there anyway, scientists now know from studying astronauts that the lack of Earth’s gravity can wreak health havoc, such as ...