Question

Why astronauts need oxygen cylinder when they travel to space?​

Answer 1

Answer:

here is your answer

Explanation:

As we go up in the space, the oxygen available for breathing becomes less and above certain height in space there is no oxygen at all, so the astronauts carry oxygen cylinders with them to ensure sufficient oxygen supply for breathing.

hope its help you

Answer 2

Answer:

As we go up in the space, the oxygen available for breathing becomes less and above certain height in space there is no oxygen at all, so the astronauts carry oxygen cylinders with them to ensure sufficient oxygen supply for breathing