Such an "umbrella" would protect astronauts from the super-fast charged particles that stream away from the Sun.

As such, present and future training must incorporate systems and processes for protecting astronauts against radiation.

Space suit helmets have gold-impregnated face shields to protect astronauts from the direct rays of the sun.

Galactic cosmic radiation poses a major challenge for spacecraft designers looking to protect astronauts on long missions into deep space.

A key challenge is to protect astronauts from dangers posed by solar flares and cosmic rays.

The space capsule must also protect astronauts from the cold and radiation of space.

Space ships are designed to keep air inside of them and to protect astronauts from extreme temperatures.

The space walk is to determine how well heated gloves and boots and other newly modified thermal gear protect astronauts.

So to protect astronauts, NASA has developed elaborate space suits.

The object is to destroy alien invaders, while protecting astronauts on the landscape from abduction.