Castor

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Castor's Constellation Friends (Other Gemini stars)

 * ===[[image:poruk-z.jpg width="247" height="186" align="left"]]===
 * Pollux** || Pollux's site ||

About Gemini
Find the big dipper, and look up north-west from the four stars in it. You’ll get to pollux, a big red star. Directly to the right of pollux, you’ll see castor. Castor and Pollux were twins, but with different dads. Pollux was Immortal, because he was the son of Zeus, but Castor wasn't because he had a different father. When Castor was murdered, Pollux asked if he could share his death, but he was immortal. Zeus let them share Pollux's immortality, so now the two brothers are together in the nighttime sky.

Parallax (A way to measure distance in space)
Parallax is an apparent shift in placement of an object (ex. star) when looking at it from different locations. 1 divided by 0.0655=15.26717557 15.26717557=15.27 15.27parsec times (3.262 lightyears divided by 1 parsec)=49.8104 lightyears (after taking away both parsecs 49.8104=49.81 lightyears Castor is 49.81 lightyears away
 * 1) Look at a star from opposite angles. (Opposite sides of the sun)
 * 2) Measure the angles (Distance)
 * 3) Divide 1 by the distance