What is stdddd?

The first satellite was launched by which country and when? How could particles that small cause an explosion as big as the Big Bang? Is it true that France never officially recognized the independence of the US? Why Temperatures are highest in the tropical zone because the suns rays? What is the pull force that acts on an object due to gravity? How many centimeters up is outer space? What term is also known as cross-eyes? Who was the first man to set foot on the surface of the moon? What is uses of fog? Where did john glenn do his work? What is it called when the moon looks different at different times of the month? What occurs when the moon travels through the earth's shadow? When did Buzz Aldrin leave high school? How long did neil Armstrong and Buzz Aldrin stay on the moon? What are The planets in order of the smallest temperature? Are there people in the space station orbiting the earth? What is the Roman name of Zeus' wife? What does sun mean on a ring? Why there are 50 stars on the flag of USA? Should space shuttle endeavor be capitalized?