What country helped Apollo 13?

What range of declination makes stars appear circumpolar? Who developed a theory about the effect or gravity? What does skylla mean? Which planet has a rotation period most like earths? How much of space isn't explored? Why is space shuttle rocket brown? Which emits the most infra red radiation matte silver surface or shiny black surface? Why does the moon rise in east to west? How is space a vacuum and what implications does this have for space exploration and our understanding of the universe? Are yellow stars hot? Do solar eclipse glasses expire and if so, how can you tell when they are no longer safe to use? What time does rainbows end close? How are the moon's craters evidence that large meteoroids probably hit Earth? What happens to the suns energy when it hits earth on a pie graph? How much does NASA make each year? What does the name celestine mean? How big is 100 solar masses? How were hot air balloons used when first invented? To get into space how high up do you have to travel? How did Edwin Hubble become an astronomer?