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Astrum Answers Mar 2021 (Patreon)

Published:
2021-03-15 11:21:59
Imported:
2026-06
Tags:

Poll

Astrum Answers Mar 2021

  • Why does the Moon only have rounded mountains? 17
  • What would be different if the Earth had two Suns? 33
  • 2021-03-15
  • 50 votes
{'title': 'Astrum Answers Mar 2021', 'choices': [{'text': 'Why does the Moon only have rounded mountains?', 'votes': 17}, {'text': 'What would be different if the Earth had two Suns?', 'votes': 33}], 'closes_at': None, 'created_at': datetime.datetime(2021, 3, 15, 11, 21, 59, tzinfo=datetime.timezone.utc), 'description': None, 'allow_multiple': False, 'total_votes': 50}

Content

OK! The previous Astrum Answers has been published, so its time for a new poll! What question do you want to see answered this time?

Comments

Lukas Kalbertodt

Regarding the "two suns" question: there are obviously a few different configurations. E.g. earth could orbit on of those suns, while both suns orbit each other around their center of mass. Or the earth could orbit the center of mass of both suns while both stars are on the inside. (See https://en.wikipedia.org/wiki/File:Planets_in_binary_star_systems_-_P-_and_S-type.svg). What I wondered just now: would it be possible for a planet to orbit around the center-of-mass of both stars but INSIDE the stars' orbit? So that the orbital period of the planet would be shorter than that of the stars. Or would that orbit be unstable?

Dave Mausner

Yipes! That is a good question by Lukas. Let's learn about the possible configurations.