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How close can two earth-like planets be in their orbits around a single sun?
I need to know how closely they can orbit without disturbing each others stability and life on the planets.
Sorry, I am a writer, not a scientist, and am trying to understand how things work so I don't make a major blooper. I also have to work out how long it would take to journey from one planet to the other at a fraction of light speed..
2 Answers
- poornakumar bLv 710 years agoFavorite Answer
Right now we have such a situation in Venus & Earth duo. Their orbits ratio is 7:10. Both are so alike that they are called twins. But a slight kink caused Venus to have a poisonous atmosphere and a high atmospheric pressure. It demonstrates how critical things can get, if you are looking for life-like conditions in your sought-after planet.
- cosmoLv 710 years ago
You could boost the mass of the Moon up to Earth-like levels and make it an Earth-equivalent. That would be reasonably stable.
Otherwise, you'd need to put the planets into, say, a 3:2 orbital period resonance, so the perturbations would cancel out.
