What were Neil Armstrong's motivations?

Is the mass and gravity of Earth used as a standard of comparison with other planets? What is the orbital diagram for berkelium? Can a galaxy die? What are some tools that use lenses to refract light? How did Demeter and Persephone affect the seasons? What is the meaning of endeavor the space shuttle? Is there any planets like Earth? Are you taller at night or in the morning? Another word for stages of the moon? What is a special telescope used by scientists to study the sun's corona? What are some common classifications of cloud types? What is Apollo's name in Roman mythology? Summary of the creation story from luzon? Why are old stars more luminous than young stars? How many planet Mars would it take to equal the Sun? What is the increase in brightness of light is called what? What two planets are farthest apart? Did Ken Mattingly die? In what months of the year is the sun vertically overhead at the equator? What device is useful to look at the moon?