Your first airless world (The life-support belt seems somewhat out of adjustment, so you constantly feel as if you're going to explode).
Because of the lack of atmosphere, you must be very careful not to look at the Sun so that you will not be blinded by the ultraviolet and X-ray radiation; however, you are able to determine that the Sun has about the same angular size that you are used to on Earth. Also, because there is no air, you notice that the shadows are completely pitch-dark and there are no sounds at all. Although this world is clearly lifeless, you are surprised to find footprints and car tracks etched in the surface.
Question 2
How do the speeds at which we are moving with Earth's rotation and orbit compare to the speeds of more familiar objects?
A) Earth's rotation carries most people around the axis faster than a commercial jet travels, and Earth's orbit carries us around the Sun faster than the Space Shuttle orbits Earth.
B) Earth's rotation carries most people around the axis at about the speed of a commercial jet, and Earth's orbit carries us around the Sun at a higher speed.
C) Earth's rotation carries most people around the axis at about the speed of a car on the freeway, and Earth's orbit carries us around the Sun at about the speed of a commercial jet.
D) Earth's rotation carries most people around the axis at about the speed at which the Space Shuttle orbits Earth, and Earth's orbit carries us around the Sun at nearly the speed of light.