Backdrop: Our galaxy, the Milky Way is approximately 80 to 120 light years wide containing about 400 billion stars (our sun is but one such star); so that if we traveled in a space ship moving at 186,000 miles per second (the speed of light) approximately 100,000 Earth years would be required to cross from one side to another.
Further: The estimate of number of galaxies in the Milky Way universe (our universe) is debatable, however estimates are generally 100 billion with some as high as 500 billion. Remember it takes 100,000 miles at light-speed to travel across our galaxy. Then, there is that problem of traveling through space from one galaxy to another. Our closest neighbor galaxy is about 2.4 million light years (thus 2.4 millions years at light-speed to arrive there). Indeed, that's a long trip for the kids to be entertained.
Are humans on the third planet (Earth) revolving around the sun the only intelligent (so to speak) life in the universe?
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