1.

A star is 4.3 light year away the Earth.What does it mean?

Answer»

No one knows yet, but Alpha Centauri is an obvious target. It's the neareststarsystem to our sun at4.3 light-years away. That's about 25 trillionmiles(40 trillion km)awayfromEarth– nearly 300,000 times thedistance from the Earthto the



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