Antares is the 16th brightest star in the sky. It is fairly close to us too... only about 600 light years away. (Meaning that its light, traveling at 186,282 miles per second, takes only 600 years to reach us!) To put this 600 light years into perspective... The furthest celestial body visible to the naked eye is the Andromeda Galaxy and its roughly 2,610,000 light years away!

The "particle horizon", the horizon of the visible part of the universe, is 13.2 billion (13,200,000,000) light years away from us. Our sun is only 8.3 light-minutes from earth, imagine that!

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What do you know, Joe?

What is the name of the largest moon in our solar system?

A. Titan


B. Ganymede

C. Triton

Last Post Answers: A. Alternative