Seth Shostak quoteSeth Shostak [0-0]
American Scientist 
Quote rank: 518
| Ever since the Second World War, television signals (as well as FM radio and radar) have served as Homo sapiens' emissaries into deep space. High-frequency, high-power broadcasts have filled an Earth-centered bubble more than 60 light-years in radius with signals. |
SourceThe script ran 0 seconds.
