How long can this pair last? Woildnt they eventually fall into each other?
As long as we want it to?
I hear we’re getting a space force.
Why, then does no the earth fall into the sun, or the moon onto the earth. Actually, the moon is going the other way, receding away from earth due to tidal breaking. (It's complicated.)
Any two bodies in orbit are perfectly stable in the absence of external forces. They have so little gravity that it would not take much to disrupt them, and cause them to go along on separate orbits. A close pass near a planet could do it. The only two planets whose orbit they cross are the gravitational pipsqueaks Earth and Mars. The orbit is tilted by 6.21 degrees from earth's orbit, so it is unlikely they will ever come close enough to earth to seriously interact.