Vacuum in space

No, we don't because the Earth's gravity pulls on us. That's why in a vacuum chamber you still feel gravity.

>Also why aren't the suits blown up like balloons if in space there is no pressure because there is vacuum and we need to have 100kPa in the suit to survive?

The space suit resists the conditions of space and creates conditions suitable for a human.

That's the whole fucking point.

just a note on Jupiter, it's actually gravitationally compressing itself. Which causes heating, in fact it emits more energy than it receives. But yea obviously this means it retains all it's mass

Jesus Christ.

>A thermos does not create a vaccuum
I think OP means vacuum insulated. In a good thermos it would have two glass layers with a tiny gap between them where air had been sucked out before sealing it.
Since heat doesn't can't conduct temperature well through a vacuum it keeps your warm stuff warm, and cold stuff cold.

>Maybe someday...
They've been working on skinsuits for decades. Using the mesh they use for burn patients as the basis, that supply a constant pressure. It's basically a mesh bodystocking you would wear under a wetsuit-like outer layer. keep the head and torso pressurized for convenience and comfort.
I think the big problem has always been testing it well enough to sell it to the Americans or Russians.