Is there life  other planets? Are we alone? These are two  the biggest questions humans have been asking  centuries. Now, scientists have launched a new search to find  if there is... anybody...  there. The researchers are  the SETI Institute in California. SETI stands  Search for Extraterrestrial Intelligence. The mission  SETI is, "to explore, understand and explain the origin and nature of life in the universe and the evolution  intelligence". SETI scientists will use new technologies to scan the heavens  signs of alien life. They will share their data  the public. SETI hopes that by sharing data, "citizen scientists" could spot things missed  scientists.
SETI's astronomers will use 28 giant radio telescopes  their search for alien life. The telescopes are located all  the world. It will be the first time that a project will search the entire sky  signs of alien life. The signs they are looking for are called "techno-signatures". These include things  alien chemicals, large amounts of oxygen, non-natural structures, and light  lasers. Astronomer Dr Tony Beasley said: "Determining whether we are alone  the universe as technologically capable life is among the most compelling questions  science." Another scientist, Jill Tarter, said we are getting closer to finding  if alien life exists. She said this science is now no longer fiction, but "almost mainstream".