It does rely on circumstances. If you have a spacesuit to protect you from the elements, and are safely tethered to the spacecraft, then yes, you should be fine.
people are not safe in space if there air tanks run out of oxygen because there is no air in space.
It is safe to have a space heater, but it does have risks like anything else. If someone wants to use a space heater, they should be very careful.
To see if it was safe for a human to travel into safe. If the monkey made it, a human might survive space travel. If the ape died, then it was not safe for a human to go into space. The chimp lived, so human beings were sent into outer space.
Sometimes. Oil-filled space heaters, which are fire-safe are preferable. Regular electrical space heaters can be used if they are placed in safe places, and turned off before leaving work.
Water
They hold hands.
There is no safe temp. to live in space because there is no air to breath.
the space shuttle challenger was kind of safe. the only problem was that it was a cold day and the O-rings broke because of the cold.
You need to get a specified bathroom heater for it to be considered safe.
Yes
Hardly. Space travel still isn't "safe". Multiple things could always go wrong when you are about 500 miles from civilization.
In a space shuttle usually but now that has been decommisioned the only way to get into space is to build your own (safe) space craft or go to Russia where you can get into space using their space craft.