Radio waves haven't turned up any signs of alien life, so astronomers are widening the spectrum of their search to include near-infrared light.
Want to block out that angry talk radio show? Here's an easy, step-by-step guide: Radio Jamming 101.
Last time we mentioned the time when Soviet radio astronomers went public about listening in on radio signals from an alien civilization. As it turned out, what they were actually listening to was a quasar: the blazing core of a galaxy that can emit radio waves that fluctuate in a regular pattern. So regular, in fact, that people thought it was an alien intelligence. Learn more on this Moment of Science.
This is it! Scientists have finally found definitive proof of an advanced alien civilization of incredible power!