A drawn section of a tree and a branch with leavesA drawn section of a tree and a branch with leaves
Antennas on the background of a beautiful starry skyAntennas on the background of a beautiful starry sky
A high - altitude plateau 5000 meters above sea levelA high - altitude plateau 5000 meters above sea level
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