What is on operrata?

Why did they name the rovers spirit and oppertunity? If a man has a mass of 83 kilograms on Earth what will the force of gravity on his body be on the moon? How does Santa get to all the houses in one night? Can you bring earth food into space? When The moon is not visible due to Earth's shadow? What is the possessive form of suits of those astronauts? How does a rocket move in a vacuum? What is the least dense planet? Is the Taurus constellation in the northern or southern hemisphere? What gas can hold the most heat in the atmosphere? Where in the earth can you experience eclipses? What was the first name of the first man is space? What did the first meal on the moon consist of? Will people live on the moon in 2020? Why did Robert Scott undertake the mission to go to the South Pole? Does earth release heat in the atmosphere at night? What will happened after 2012? What are ingredients of milky bar? How does a satellite fly? What is the meaning of a red star on a house?