2. By using only sticks and shadows Erotosthanes was able to measure what about the Earth, way back in 300 BC?
3. The first real research center and library in human history, were located where?
4. Who authored the Cosmos series?
5. What is happening in the Orion nebula?
6. If space is seen as an ocean to be journeyed across, then planet Earth would be the ___________ of this cosmic ocean. Complete the analogy.
7. Where other than planet Earth has life also been found? _________________
8. Police in Egypt in the early days of Alexander the great, searched ships for what?
_____________
9. Sagan felt that our present time, was a time of great danger - why?
10. Sagan's Cosmic Calendar has what as its beginning (jan 1) and what as its end (dec 31) ? ___________________, _____________________