oxygen
Well, in space their is no air, so we obviously air is the number on thing humans would need in space.
oxygen...
We can not live with out trees
the suit of astronaut
why do we need a pistol in space
The first animals were launched into space to see if it would be possible for them to survive in space at all. Once that was settled and humans went into space, there was no longer a need for space pets.
Everything that you can think of about space (that is factual) is what humans know about space. Humans are the only reason we know space contains planets, stars, and moons.
No. Humans, for example, need much more space to live than ants.
Lack of air, radiation, extreme temperatures.
Humans have not left outer space. The International Space Station is still crewed.
Because there is no substance in space to flow into you when you try to breathe. You can pull your diaphragm down inside you, in the normal attempt to fill your lungs. But there is no air, and they will not fill.
The reason why space station are that important is because humans body normally can't live in space. There are different factors that when in space can affect humans body and space station or spacecraft's role is to support humans to remain in space for a period of time.