Question

Why in space any astronaut gone so why they were white costume ?​

Answer 1

After putting on the spacesuit, to adapt to the lower pressure maintained in the suit, the astronaut must spend a little more than an hour breathing pure oxygen before going outside the pressurized module. The reason that spacesuits are white is because white reflects heat in space the same as it does here on Earth.

Answer 2

Answer:

NASA astronauts wear white suits, since white is the color that reflects the most sunlight in space, and protects them from cancer-causing solar radiation.