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Brightest Stars

Arcturus.
Tonight | May 13, 2014

Arcturus, orange star, cuts through galaxy’s disk

Arcturus is cutting perpendicularly through the galactic disk at a tremendous rate of speed – some 150 kilometers per second.

Great Pyramid of Giza
Tonight | May 06, 2014

Thuban is a former Pole Star

Thuban was the Pole Star some 5,000 years ago, when the Egyptians were building the pyramids.

Artist's concept of Spica from hypothetical planet
Tonight | Apr 24, 2014

Spica is a whirling double star

Spica is a binary star, with two stars larger and hotter than the sun, telescopically indistinguishable from a single point of light.

Image Credit: ESO Online Digitized Sky Survey
Tonight | Apr 12, 2014

Mizar and Alcor, famous double star, really six stars

Mizar and its fainter companion star Alcor are located in the handle of the Big Dipper. They are one of the sky’s easiest-to-spot double stars.

Cor Caroli by F. Ringwald, Fresno State
Tonight | Apr 09, 2014

Cor Caroli or Heart of Charles

The star Cor Caroli, or Alpha Canum Venaticorum, is a binary star and the brightest star in the northern constellation Canes Venatici.

Constellation Crux photo by Christopher J Picking in New Zealand.  More information about this photo here.  Used with permission
Tonight | Apr 02, 2014

Mimosa second-brightest in Southern Cross

If you’re in the U.S., you must be at about New Orleans’ latitude to glimpse it. From the southern hemisphere, Mimosa is a prominent and beloved star.

Constellation Crux photo by Christopher J Picking in New Zealand.  More information about this photo here.  Used with permission
Tonight | Mar 26, 2014

Acrux is brightest star in Southern Cross

Blue Acrux shines as the brightest star in the constellation Crux the Southern Cross.

Credit: Russell Croman
Tonight | Mar 19, 2014

Regulus is the Lion’s Heart

Meet Regulus, brightest star in Leo the Lion, soon to be covered by an asteroid in the best and brightest asteroid occultation ever predicted for North America.

Alphard.  (North Central Kansas Astronomical Society)
Tonight | Mar 09, 2014

Alphard is the Snake’s Heart

You can see Alphard – the Heart of the constellation Hydra the Water Snake – in the evening in March, April, and May.

Golden Pollux
Tonight | Mar 03, 2014

Pollux is the brighter of two Twin stars

Pollux is the brighter of two bright stars in the constellation Gemini the Twins. It is the 17th brightest star in our sky.