A University of Arizona professor is optimistic about finding life on a newly discovered planet located in the Alpha Centauri system, which is the closest solar system to ours. The planet is believed ...

About 50 light-years from Earth, a gas giant about half the mass of Jupiter orbits a sunlike star. The discovery of Pegasi 51 ...

A high concept gets low execution in “Planet 51,” a lame-brained toon that even kids will recognize as an insipid goof on sci-fi conventions. Any number of things have been and could still be done ...