Recent content by Pierre Ordinaire

  1. P

    Undergrad Why does the Moon have only 1/6 Earth's gravity if it's 81 times less massive?

    Thank you.
  2. P

    Undergrad Why does the Moon have only 1/6 Earth's gravity if it's 81 times less massive?

    Apologies in advance if this has been touched before. If the Earth has 81 times the mass of the Moon, why the Moon has 1/6 of the gravity of the Earth?
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    Stargazing Event Horizon Telescope Results Released Yesterday (April 10, 2019)

    Excuse me, but are there not many stars between the black hole and Earth, that should be blocking the view of the black hole?
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