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Can two planets revolve around each other?
Actually… the answer is theoretically yes. Two Earth-size planets that orbit each other might exist around distant stars. Binary stars, or two stars orbiting each other, are very common throughout our own galaxy. Some of these two-star systems are even known to host exoplanets.
Giant planets like Jupiter have bigger gravity on their atmospheres than giant stars. This is because the radius is quite smaller, even if the mass is small as well. So it is very unlikely that a giant planet can share atmosphere with another: they would need to be very close, really close.
What if Earth orbited a planet?
If Earth changes its orbit, perhaps due to the sudden appearance of a heavier (than the sun) body in the solar system, it would mean disaster for our planet. If the equilibrium between the sun and Earth is disturbed, then our planet would crash into the sun.
What would happen if the distance of a planet from the sun was doubled?
Doubling the distance from the sun reduces gravitational pull and increases the orbital period.
These two planets could collide, one of them could get ejected, or one could even get hurled into their central star. But there’s another possibility: these two planets could successfully share a single orbit together, remaining in orbit around their parent star indefinitely.
What would happen if two planets in our solar system collide?
If two planets pass closely by one another in orbit, one can perturb the other, resulting in a massive orbital change. These two planets could collide, one of them could get ejected, or one could even get hurled into their central star.
Can two planets be in the same system?
If you had a system where two planets were comparable in mass/size, and only separated by a short distance, you could have what’s known as either a binary or double planet system. Recent studies indicate that this is legitimately possible. If playback doesn’t begin shortly, try restarting your device.
Do the Earth and the Moon orbit each other?
The Earth and the Moon do orbit each other, or rather, they both orbit a common point between them called the barycentre. The Earth/Moon barycentre is inside the Earth, but closer to the surface than to the centre of the planet.