What role does gravity play within the solar system? Within interstellar space? How does it impact the possibilities for space exploration?

How do the authors use mythology to explain various scientific ideas? Use at least two specific examples to illuminate the connections between ancient mythological texts and contemporary science.

How does popular culture influence how the general public understands the concept of space and/or the possibilities for space exploration? Does the Hollywood version of science, with its sacrifice of accuracy for spectacle, undermine the advancement of space travel?