There have been experiments to create higher vacuums in space, which have been used to grow semiconductor crystals: https://scfh.ru/en/papers/vacuum-in-the-wak

There have been experiments to create higher vacuums in space, which have been used to grow semiconductor crystals: https://scfh.ru/en/papers/vacuum-in-the-wake/ https://scfh.ru/en/papers/vacuum-in-the-wake/ https://en.wikipedia.org/wiki/Wake_Shield_Facility https://en.wikipedia.org/wiki/Wake_Shield_Facility I'm not saying it's practical, but it's pretty cool.