Geothermal activity can be generated by the gravitational pull of a planetary companion.
Based on terrestrial population studies, an Oregon scientist says 40,000 men and women would be the ideal number to start an extraterrestrial colony.
Researchers have found evidence of an incredibly rapid expansion of the universe a mere fraction of a second after the Big Bang.
Astronomers say they have discovered 715 new extrasolar planets.
Rover’s final message before going into hibernation, “Goodnight Earth. Goodnight humanity.”
Closest supernova since 1987 could reveal clues about the origin of the universe.