Question

1. which of these choices does not pose a limit to human space exploration?

a. the distance between objects in space
b. the technology required to travel through space
c. the necessity of water and air for humans
d. the number of objects in space to be explored

Explanation:

• Option a: Large distances in space (e.g., between stars) limit how far we can travel in a reasonable time, so it's a limit.
• Option b: Current technology has limitations (e.g., speed, life support) for space travel, so it's a limit.
• Option c: Humans need water and air, which are limited in space, so this is a limit.
• Option d: The number of objects to explore is vast but does not restrict exploration—more objects mean more to explore, not a limiting factor.

Answer:

d. the number of objects in space to be explored