Question

What are two ways in which a space suit protect an astronaut

Answer 1

Space suits protect astronauts by keeping out extreme temperatures, they are also strong enough to protect astronauts from getting hit by space dust. Additionally they supply oxygen and water. 

Answer 2

Also, the visor thing on the helmet, I think it's called a solar shield, protects the astronaut from the sun's harmful rays; think staring at the Sun from Earth is bad? I think staring at the Sun from outer space wouldn't be pleasant... these "powerful sunglasses" help you keep your sight. :) Hope this helped!