The Search for Extraterrestrial Intelligence by Carl Sagan
|
To reach other intelligences our technology must reach beyond interplanetary distances it has to go interstellar distances. This science video contains:
|
|
To reach other intelligences our technology must reach beyond interplanetary distances it has to go interstellar distances. This science video contains:
|
|
The universe began with the big bang, and for the first four hundred thousand years all matter was ionised, indicated by the blue region in the diagram. When the universe had cooled enough to allow... This science video contains:
|