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~ Distance Between Earth and Other Planets |
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Distance Between Earth and Other Planets Distances to stars and celestial objects are immense. Cars travel at an average of 60 miles/hour, jets fly at about 600 miles/hour, and rockets travel through space at 25,000 miles/hour. Imagine that with new technology you can build a time machine that travels at light speed, or 186,000 miles/second. The unit used to express stellar distance is the light-year, which is the distance that light travels in a year (5.8 trillion miles or 9.46 x 1012 kilometers). With the unit of light-years, we can begin to make sense of the very great distances between objects in the universe and begin our time travel exploration.
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