Answer:
There is no upside down/rightside up.
Step-by-step explanation:
It's hard for astronauts to tell whether they are up or down because gravity tells you which way is down. For example, on Earth you would be able to point down, towards Earth's core. But someone on the opposite side of Earth pointing down would be pointing the opposite direction, but still towards Earth's core. "Down" is really the direction gravity is pulling you in. So if there's not enough gravity to pull you in a direction you don't really have a down. So unless they can see their surroundings to see which way is "up" relatively, it would be impossible to know whether they are rightside up/upside down.