Atmospheric bubble around ships when leaving atmosphere - and vice versa
When leaving the atmosphere, my ships usually have an invisible "bubble" of atmosphere around them. Meaning i can exit the ship in space and if i keep close to the hull i can still breathe.
Other way round the same: If i enter a planet´s atmosphere, my ship carries a "bubble" of vacuum with it. So after landed on the surface, the planet has atmosphere but close to the hull of my ship there´s none.