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- Wed Jan 20, 2010 9:56 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Known Universe (2010 Jan 20)
- Replies: 31
- Views: 4777
Re: The Known Universe (2010 Jan 20)
I'm having a hard time grasping just how small I am. Can you help me gain some perspective? If the Earth were an approx. 5cm diameter (approx. 2") marble, what object represents our sun? If our sun were a 5cm diameter marble, what object reflects the size of our solar system? If our solar syste...