Jonathan Wyatt. Brightest Star In The Sky! With an apparent magnitude of -1.46 and an absolute magnitude of 1.42, Sirius A is by far the brightest star.

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Presentation transcript:

Jonathan Wyatt

Brightest Star In The Sky! With an apparent magnitude of and an absolute magnitude of 1.42, Sirius A is by far the brightest star lighting up the night sky. It is 23 times brighter than the Sun!

Location Located in the constellation Canis Major, Sirius A is around 8.6 light-years from Earth. It is actually one in a binary system, the other being a white dwarf called Sirius B. Scientists believe that Sirius A siphoned energy from Sirius B early in their lifetime.

1.8x the Sun’s Diameter

Binary Systems A binary system is made up of two stars spinning around each other, constantly getting closer until they collide. dying#that-star-is-dying

Death In about two billion years, Sirius A will become a giant, then shrink back down to a white dwarf. As far as we know, it will supernova.

The Dog Star Because Sirius was not visible during the summer months, ancient Greeks thought that the heat of the star was being added to that of the sun, giving us hotter days. That is why the hottest days are called Dog Days.

Historical Significance “Sirius rises late in the dark, liquid sky On summer nights, star of stars, Orion's Dog they call it, brightest Of all, but an evil portent, bringing heat And fevers to suffering humanity.” -Achilles from The Iliad, Homer

A Musical Star… Sirius Satellite Radio is named after Sirius A Karlheinz Stockhausen, famed experimental composer, claimed to come from a planet in the Sirius system. Puzzle on Vimeo

Sirius in Literature Sirius Black from Harry Potter The Hitchhiker’s Guide to the Galaxy True History Space Opera Lucky Starr Proof The Starlight Barking

Sirius in Film Doctor Who Star Trek Power Rangers Screamers Good Boy

Sources

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