Embedded Files
Topic Reviews:
Topic Reviews:
1.0: Human understanding of both Earth and space has changed over time
2.0: Technological developments are making space exploration possible and offer benefits on Earth
3.0: Optical telescopes, radio telescopes, and other technologies advance our understanding of space
4.0: Society and the environment are affected by space exploration and development of space technologies
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Cool sites, videos, and extras
Cool sites, videos, and extras
VIDEOS:
How we figured out how the Earth goes around the Sun
A refresher on Earth's Seasons
The Hertzsprung-Russell Diagram
Distances: Crash Course Astronomy
Journey to the Edge of the Universe
The Solar System: Crash Course Astronomy
What Horizons has Taught us about Pluto
Chris Hadfield debunks space myths!
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