Recent content by Pierre Ordinaire

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    Undergrad Understanding the Discrepancy: Why Does the Moon Have Less Gravity Than Earth?

    Thank you.
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    Undergrad Understanding the Discrepancy: Why Does the Moon Have Less Gravity Than Earth?

    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?