Water is

cheap

/

expensive

to bring into space due to its weight and volume.

Robots will be used for digging, gathering, and transporting resources on asteroids, as well as for exploring the surface and

identifying

/

purifying

materials.

Astronauts live and work aboard the International Space Station (ISS),

floating

/

running

rather than walking.

Testing products away from Earth’s protective effects may be

advantageous

/

disadvantageous

for researchers.