Question

Carl read a science fiction story in which a woman traveled to a planet in

another galaxy. He knows that travel to other galaxies is not yet possible.
Which of the following is the main reason why humans are not able to travel
to other galaxies?

Planets in other galaxies are too far away.

Planets in other galaxies do not have gravity.

Planets in other galaxies are too cold for humans.

Planets in other galaxies have no solid landing surfaces.

Answer 1

A

Step-by-step explanation:

The main reason why humans are not able to travel to other galaxies is that planets in other galaxies are too far away.