It’s in the process of melting right now, if we get it into space, it wouldn’t be melting anymore, though the creatures on the continent would be killed, however
Untrue! Parts of Antarctica are melting but it's getting colder overall for complicated weather reasons.
Let's please discuss the most scientifically feasible way to launch a continent into orbit, please? This is why we're here, people.
This would be extremely difficult because continents are large heavy masses of rock, but I would say your best bet is some kind of giant volcanic eruption. Like if you can make the mantle under Antarctica REALLY REALLY ANGRY somehow, that's your ticket.
There are ways to get electricity that don’t involve use of burning fossil fuels, such as geothermal power, solar power, wind power, water power, we could switch to those power sources, eventually stopping the need for burning fossil fuels.
(All of those are fundamentally impractical for various important and largely unchangeable reasons.)
Honestly, I've said before to others that the most practical way to cool the Earth more at this point is to build a giant metal heatsink outside the atmosphere. For some definitions of "practical".
ETA: Oh, also, we could totally move the Earth farther from the sun by changing its rotation speed, by the way, by conservation of angular momentum. Doing this without transferring massive amounts of heat into the atmosphere would be tricky, but not impossible; we could, for example, build giant tubes to direct rocket exhaust or mass drivers out of the atmosphere. I mean, it's easier than launching Antarctica, at least.