About 30km/s, that it to say: the velocity cannot change at all if you wish to maintain the same orbit.

Every circular orbit is associated with exactly one orbital velocity. Every general elliptical orbit is associated with exactly one velocity profile--one specific apoapsis velocity, one specific periapsis velocity, and one specific curve in between.

If you speed the Earth up at all, its orbit will be different.

About 30km/s; that it to say, the velocity cannot change at all if you wish to maintain the same orbit.

Every circular orbit is associated with exactly one orbital velocity. Every general elliptical orbit is associated with exactly one velocity profile--one specific apoapsis velocity, one specific periapsis velocity, and one specific curve in between.

If you speed the Earth up at all, its orbit will be different.

About 30km/s.

Every circular orbit is associated with exactly one orbital velocity. Every general elliptical orbit is associated with exactly one velocity profile--one specific apoapsis velocity, one specific periapsis velocity, and one specific curve in between.

If you speed the Earth up at all, its orbit will be different.

About 30km/s, that it to say: the velocity cannot change at all if you wish to maintain the same orbit.

Every circular orbit is associated with exactly one orbital velocity. Every general elliptical orbit is associated with exactly one velocity profile--one specific apoapsis velocity, one specific periapsis velocity, and one specific curve in between.

If you speed the Earth up at all, its orbit will be different.