Paragraph 2
Scientists will use
radio
to look for "techno-signatures" of alien
. These include chemicals, large amounts of oxygen, non-natural
, and lasers. It is the first
a project will search the entire sky. An
said finding out if we are alone, "is among the [biggest]
in science". Another
said we are getting
to finding out if aliens exist. She said science fiction is now "
mainstream" science.
