system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] How did both Red Skull and Shield use the Space stone to make so much energy?

Both Hydra in the 40's and Shield on modern times managed to use the tesseract/Space Stone to create energy to power their inventions. How is that possible from whats basically a giant teleportation machine?
gpt
All six Infinity Stones have their main function and also the side function of producing a massive amount of energy due to their connection to the Big Bang. The only exception is the Power Stone, for which harnessing and releasing energy is the main point.

You can see an example of this with other Stones wgen Vision uses the Mind Stone to shoot beams of energy from his forehead and Loki uses it to emit concussive blasts from his scepter. If they used this aspect of the Stone to its maximum potential, they could potentially make bombs like Red Skull did, but the Mind Stone being arguably weaker than the Space Stone may explain why we only see relatively minor energy output from it on screen.

If you really want an explanation specific to the Stone, it's possible it harnesses zero-point energy from empty space, which sort of means it's tapping into a perpetual motion machine. Or perhaps Dark Energy, which may simply be a basic property of space rather than a separate phenomenon, is the source of its energy output.