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Could Neptune be viewed with the naked eye from Uranus?
-2 votes

If I have calculated it right then the apparent magnitude of Neptune as seen from Uranus is approximately 4. The absolute magnitudes of Neptune (-7.11) and Uranus (-7.00) are nearly identical. The ...

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If we could fly off edge of observable universe what would happen?
-4 votes

In 1995 the Hubble telescope revealed what lies beyond the edge of the observable universe. In a small pitch-black area of the then known universe it found 3000 distant galaxies. This discovery was ...

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