Carl Sagan
c/carl-sagan
Carl Edward Sagan was an American astronomer, planetary scientist and science communicator.
c/carl-sagan
Carl Edward Sagan was an American astronomer, planetary scientist and science communicator.
…to the earth the stuff from which life emerged. Next slide: so here is an artist's conception. This is the Japanese artist Kazuaki Iwasaki, a lovely picture of the earth around 4 billion years ago. The moon is closer to the earth then so it looks…