Astronomy: A Closer Look at Outer Space and Earth's Place Within It

Discuss the phenomena of gravity, the earth's atmosphere, and outer space with a Representative from NASA who describes the sensation of fighting against gravity, escaping the earth's atmosphere, and navigating in a place without gravity. An Astrophysicist sheds more light on the wonders and forces of outer space by discussing black holes and the forces that create them. The Astrophysicist also explains light energy by discussing the concept of light years and the fact that many stars we see in the sky today no longer exist. Finally, an expert Navigator who uses celestial navigation discusses how a planet's position can be used to calculate precisely one's location on earth.

1. Member of NASA

2. Expert Celestial Navigator

3. Astrophysicist