Atmospheric Shielding

Rather than using fragile or obstructive glass domes, many stations built in vacuum environments use gravtech-enabled atmospheric shielding instead. This involves constructing an enclosed pattern of gravity projector pylons - aligned to their adjacent neighbours. When all pylons are working simultaneously, the resulting 'net' of gravity funnels deflects atmospheric particles such oxygen, keeping them within or without the bubble of air created by an on-site atmospheric generator.
Atmospheric shields in a vacuum require only enough power to deflect air particles, so whilst the initial investment is significant they have manageable power requirements after installation. The shields themselves are invisible aside from a slight light-distortion effect, similar to a heat haze, noticeable only at short range. As a result, sites with this setup have a very 'open air' feel to their exteriors - a sight which can unnerve unseasoned spacers.
Vacuum shields also cause little obstruction to any solid matter passing through, such as vehicles or even people - with any gap in the atmospheric netting being instantly sealed by the obstruction's mass. However, users are warned against moving through without sufficient heat protection, as whilst the firm breeze of displaced air particles is unlikely to unbalance them, the high heat of the projection lasers can cause minor to severe burns. A standard vacc suit, as is usually required when entering into vacuum environments regardless, is generally enough to protect from the resultant heat as well.

Hostile Atmospheres

Atmospheric shielding technology can also be pointed outwards, designed to keep harmful atmospheres out as well as oxygen in, but this will often be much more power-intensive thanks to the shield's dual-functionality and a harmful atmosphere's generally-higher density.
The increased power requirements causes these shields to be much more visible, resembling semi-transparent windows of static energy. This increased obviousness is fortunate, as any flammable mass, including humans, trying to pass through the high-powered shield unprotected will likely suffer instant immolation. Because of this, dual layers of these shields are often used to form a kind of 'airlock', to allow vulnerable objects to exit the shielding net safely.