D
doom_shepherd
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Earthlike Double Planet Possible?
Is an Earthlike "Double Planet" possible?
By this, I mean two Earthlike planets orbiting a common center of gravity, still remaining in the "goldilocks zone" around their sun. I've heard of at least one SF book where this is speculated, but I'm wondering if the portrayal is accurate (the twin planets are described as being so close together they share an atmosphere.)
If our Earth were co-orbital with another Earth, how far away would the other Earth have to be for the orbits to be stable? What would it look like in the sky?
Is an Earthlike "Double Planet" possible?
By this, I mean two Earthlike planets orbiting a common center of gravity, still remaining in the "goldilocks zone" around their sun. I've heard of at least one SF book where this is speculated, but I'm wondering if the portrayal is accurate (the twin planets are described as being so close together they share an atmosphere.)
If our Earth were co-orbital with another Earth, how far away would the other Earth have to be for the orbits to be stable? What would it look like in the sky?