By digging: Robotic rovers are sampling Martian soils for signs of ancient life.
By visiting: Probes are being dispatched to spots across the solar system that might harbor life today.
By looking: NASA’s Earth-and space-based telescopes have been scanning the galaxy for Earthlike exoplanets outside our solar system capable of supporting life.
By listening: In 1960, scientists began scanning the universe with special telescopes for radio signals from alien civilizations. The project is called SETI, or the Search for Extraterrestrial Intelligence. It hasn’t picked up any alien broadcasts yet, but we haven’t stopped listening.
Picture Credit : Google
