Cosmos

I was watching a video, created by Carl Sagan, on the cosmos. The videos are depicted beautifully in simple language and visuals, the complexity of COSMOS. There are 7 DVDs.

2 random Questions

1. The diameter of Earth is 12600 Kms. At what speed Earth rotates which we don’t feel?

2. What is a Astronomical Unit?

Earth_Eastern_Hemisphere

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