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- Stellar Properties From Afar (Problem 1)
- Surface Temperature of Planets
- A slight belated correction on AGN
- Eric Answers
- Measuring the Astronomical Unit
- Measuring the Radius of the Earth
- Tau Ceti From Palomar
- Clarifications on AGN
- CCAT vs. Keck: Angular Resolution and Telescope Size
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October
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Okay, now I have a question! How did someone figure out that you can measure the radius of the earth that way?
Are "real" scientists allowed to use FPS?