[Campion]

That would take an incredible amount of rocket fuel. You have to climb out of earth’s gravity well, then you have to negate all, or almost all, of the angular momentum associated with being in earth orbit.

[Carriage Hill]

If you launch the payload from space, it probably would take very much, would it?

[Nateman]

It took many years for the Messenger probe to orbit Mercury. The probe used many gravity assists with planets to get the necessary speed for the encounter.