Stay to! The satellites do not float.

So the vacuum is there space, emptiness. Heat up to 100,000. Degrees, it can’t melt anything, because nothing.

PS A joke if you don’t understand it. But not so far from the truth.

A vacuum, yes, but not completely empty. There was even a fun topic at one time - when the Mir station was engaged in the synthesis of semiconductors, it turned out that there was no such vacuum on board. There was even a project - to drag a umbrella behind the station (so that this vacuum would be opened). So the satellites, though slowly, but warm up. Just at this temperature and density it is believed that it is no longer plasma - but ionizing radiation called solar wind. And it is not only in orbit, some components of the solar wind specifically deep (up to a few kilometers) under the ground are caught - neutrinos astronomy is called. In general, how not to hide - but the sun will get you everywhere with its crown and will be meatly roasted :)