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
Candle light and a card on the table with gold coinsCandle light and a card on the table with gold coins
The most powerful antenna for communication with other worldsThe most powerful antenna for communication with other worlds