Sirius, the Dog Star

The brightest star in the northern night sky, Sirius is actually a binary star system 8.7 light-years away in the constellation Canis Major.

Radio Programs

Sirius Two dogs that are moving apart — after this. Sunday, January 10, 2016
Sirius Rising The Dog Star climbs into winter evenings Sunday, January 4, 2015
Moon and Companions The little dog leads the big dog Thursday, September 18, 2014
Sirius Rising The right season for the Dog Star Friday, December 6, 2013
Dog Days The “dog days” of summer Saturday, August 17, 2013
Canopus The silver medalist of bright stars Sunday, January 20, 2013
More Sirius A stellar weight-loss program Sunday, December 30, 2012
Sirius A beautiful dog gets closer Saturday, December 29, 2012
Seventh Month Miscounting the months Saturday, September 1, 2012
Dog Days Sweating through the Dog Days of summer Monday, August 6, 2012
White Dwarfs II Stretching the light of a dead star Thursday, February 2, 2012
Sirius B A close companion for a bright star Tuesday, January 31, 2012
Sirius A close, bright stellar neighbor Monday, January 30, 2012
The Big Dog Biting into a bright constellation Sunday, January 29, 2012
Brightest Lights Cutting off a slice of the sky Saturday, January 21, 2012
The Big Dog A constellation with a bite Friday, March 25, 2011
Sirius The long path to a nearby star Sunday, January 16, 2011

Featured Images

Sirius B, the white-dwarf companion to Sirius, compared to the size of Earth
Stellar Afterlife Wednesday, February 1, 2012


©2015 The University of Texas McDonald Observatory