Which characteristic is common to the four outer planets in our solar system?

Which body in the solar system usually contains an atmosphere?

Which President is credited with largely enhancing the USA's space program

Which planet is the largest in size?

What nation was the first to orbit a human around the Earth?

What are the two main gases that make up most of the Earth's atmosphere?

What celestial body is known as a "dirty snowball?"

What is the name of the first space station launched by the United States?

What is the name of a natural or artificial object that revolves around the Earth?

Which planet rotates on its side at a 90 $\degree$  angle?

What percentage of the Earth is water?

Which astronaut was the first to set foot on the moon?

Which of the following is primarily made of ice?

Which planet in our solar system has the greatest temperature range?