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If you are in the northern hemisphere, Winter is a good time to see Orion. Using Orions belt as pointer stars, continue down to the horizon and you'll see a very bright star - Sirius. It's the brightest star in out skies due to its actual brightness and its close proximity to our solar system (8 light years or so).

It is actually a binary star system though, there are two stars in orbit about each other. The main star, Sirius A is a white hot main sequence star (active), while its companion, Sirius B, is a white dwarf star. Sirius B was thought to once be the most massive of the two, but became an inactive white dwarf some 120 million years ago. Online pictures will show the two stars side by side, the Sirius B white dwarf seen as a much smaller and dimmer star than its active companion, Sirius A. You wont be able to pick out the two stars with the naked eye.

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