What is stdddd?

What were almost all of the moon rocks made of? The rotation of Ganymede? Why was Nicolas Coperincus important to science? What are 10 ways to be sun safe? What does a planet smell like? What is mercury also known as? Is the moon in the earths gravity? Where does the Roman goddess Selene live? Why can we sometimes only see only part of the moon lit up? Why does a metal crown shine when light is on it? How much oxygen did Edmund Hillary and his dad at the top of Everest? Do comets orbit Jupiter? Is planets a noun? What can thor do? When did the Apollo 13 crew start training? How many true planets are in our solar system Explain why.? How does micrscopes produce an image while observing? Does the moon disappear on certain day of the month? What is the Aquarius constellation's nickname? Where is Uranus located at in the milky way?