Eavesdropping on outer space- search ????other civilizations have been going on for 50 years, but the results are scantyEavesdropping on outer space- search ????other civilizations have been going on for 50 years, but the results are scanty
Shining stars on a background of green glow in spaceShining stars on a background of green glow in space
The bird soars in the sky and searches for its preyThe bird soars in the sky and searches for its prey