Bears and birds, people and planets -- many things live on planet Earth. But do they live anywhere else? For a long time people have wondered about that. Maybe you have, too. Read and find out how scientists search for signs of life in outer space.
Bears and birds, people and planets -- many things live on planet Earth. But do they live anywhere else? For a long time people have wondered about that. Maybe you have, too. Read and find out how scientists search for signs of life in outer space.