Scientists search for narrow-band transmissions in outer space as a possible sign of extraterrestrial life.
Have you heard the phrase, "Let's nuke it in the microwave!" Well, Nuclear power and microwaves really don't have much in common.
MTV for Martians? Maybe not, but the idea of broadcasting into space is not as far out as you'd think!
If E.T. does try to phone us how will we know it? Find out on this Moment of Science.
Microwaves are low energy electromagnetic waves that have so little energy they can’t trigger chemical reactions in the molecules they encounter.