Earth will become too hot to handle in a billion years. There's a (very) remote chance a passing star could save us by knocking our planet back into the habitable zone.
We could move the planet ourselves by building solar sails in hyperbolic orbits that use a gravity assist from Earth to slow down. We do the same thing at the moment with space probes to speed them up - it’s all about the angle of the approach.
It’s a big planet, but we have plenty of time. If we started relatively soon we could do it slow and cheap.
We could move the planet ourselves by building solar sails in hyperbolic orbits that use a gravity assist from Earth to slow down. We do the same thing at the moment with space probes to speed them up - it’s all about the angle of the approach.
It’s a big planet, but we have plenty of time. If we started relatively soon we could do it slow and cheap.