What is cessm?

What part falls off after takeoff on a rocket? What do the life times of stars range from? What are the three names of the men who went on the Apollo 13 mission? Are there photos of Jupiter's moons? Why do expert say to sleep facing east or south? What were the most explosive events to occur on the sun? What doses sun begotten mean? Does space travel benefit us? If it takes earth one day to make complete rotation on its axis how long does it take earth to orbit the sun? What planet has yellow clouds of raining sulfuric acid? Why was the satellite created? How many space missions did Chris Hadfield take part in? What did david Scott say when he landed on the moon? Why does the moon rise at different times? The moon 'waxes and 'wanes' what does it mean? When was Apollo eleven launched and how long was it in space? How is a full moon different from a new moon in terms of their appearance and position in the lunar cycle? Is the earth double four times or eight times lager than the moon? What type of spectrum do most stars have? When did Yuri Gagarin decide to go to space?