What if their planet lacks the resources to even build a suitable spacecraft? What if their life spans are only 5 years? What if they are biologically unfit for space travel? If you could answer this.
And the size of the universe is irrelevant.
Irrelevant? Really?
It would seem to me that great distances would present the largest problems to any life forms.
If the distances of the vastness of the universe are irrelevant, what are the big obstacles for interstellar travel throughout the universe? And why haven't we had manned missions to Mars and bases on the lunar surface?
We've been around 2000-3000 years and the universe is about 12 billion years old. If there was any "intelligent" life out there, don't you think they would have solved the problem by now?
What problem would that be?
And why haven't we had manned missions to Mars and bases on the lunar surface?
For what purpose? Space exploration is a waste of taxpayers' money. If you want to explore - you pay.
Why does it take so much money? Is it because the distances of interstellar travel are irrelevant? Since our life forms have restrictions, do you think other possible intelligent, or even the most intelligent life in the universe don't?