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A constellation that arcs high overhead in fall and early winter.


Perseus, the Hero

Perseus, the Hero May 25, 2010

Radio Programs

Halloween Scary demons for Halloween October 31, 2019

Double Cluster Sparkling stellar jewels March 3, 2019

Rogue Clusters “Cities of stars” between galaxies November 17, 2017

Xi Persei A brilliant but doomed star November 16, 2017

Mirfak Looking for a companion October 30, 2017

Algol A stellar ghoul for Halloween October 31, 2016

California Nebula Lighting up a dark cloud October 8, 2016

Halloween Haunting stars in the evening sky October 31, 2015

Alpha Persei A young star ages in a hurry October 8, 2015

Double Cluster A pair of vigorous star clusters October 4, 2015

Big Story A big-screen story in the autumn sky September 27, 2015

Future Quadruplets A star cloud prepares to give birth April 15, 2015

Perseus Taking the measure of a monster January 24, 2015

Featured Images

Double Cluster

Seeing Double March 3, 2019

Close-up view of the California Nebula in infrared light.

California Nebula January 25, 2014

The California Nebula, in Perseus

Stately Nebula November 6, 2010

Comet Hartley-2 from McDonald Observatory

Jolly Green Comet October 21, 2010