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Tag Archives: Astrophysics

Lucianne (Astrophysicist) Answers Your Questions

  1. If we were to add a lot of mass to the moon, for its gravity to get stronger, what would that mean to the rotation of the earth?
  2. If smaller objects are being pulled by larger objects, then why does the moon get further and further away from earth?
  3. Why are celestial bodies always spherical in shape? i.e stars, planets, moons.

A great Q/A video. However, I am unsatisfied by her answer to the third question. I think the third question is about larger planets, not asteroids. Of course, the term ‘always’ in the question could be the reason that she didn’t see the ‘real’ question. Avoid the word always in science because in science there are very, very few things that are laws without exception.

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