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Star Colors and Temperatures

Radio Programs

Moon and Regulus Spinning off clouds of stardust May 26, 2023

Alpheratz Boosting a star’s brightness February 19, 2023

Betelgeuse The spectacular life of a giant January 9, 2023

Almach A colorful “double” quartet October 2, 2022

Universal Scale Waves rippling through the cosmos May 10, 2022

Misleading Stars A star cluster with the blues April 4, 2022

Moon and Aldebaran Going through a stellar alphabet February 9, 2022

Flaming Nebula Setting a nebula aflame December 4, 2021

Moon and Spica Heating up the inside of a star November 28, 2021

Camelopardalis A tall but faint giraffe November 26, 2021

Moon and Spica Plotting the motions of a bright star June 19, 2021

Moon and Antares A funny thing about stars July 29, 2020

Crimson Star The color of a dying star February 14, 2020

Moon and Aldebaran Taking the temperature of the stars December 10, 2019

The Dolphin’s Snout The dolphin’s contrasting colors July 27, 2019

Messier 10 Rejuvenation for some old stars June 19, 2019

Lepus Hopping after the celestial rabbit February 3, 2019

Moon and Spica A double dose of starlight December 29, 2018

More G Stars A rare class of stars October 21, 2018

G Stars A rare class of stars October 20, 2018

Moon and Spica Heating up a beautiful star August 15, 2018

Solar Twin A young “twin” of the Sun June 1, 2018

Twinkling Twinkle, twinkle, little star December 23, 2017

Moon and Regulus A star in the prime of life December 7, 2017

Beta Pegasi Cooling off a giant star September 20, 2017

Orange Triplets Three orange stars for the price of one June 24, 2017

The Most Beautiful The “most beautiful” stars April 30, 2017

Seeing Orange Puffing up like orange balloons April 1, 2017

Moon and Regulus Reading a star from its color March 10, 2017

Counting Starspots Counting spots on a small star March 3, 2017

Moon, Antares, Saturn Subtle color for a giant planet January 22, 2017

More Fornax Drinking from the fountain of youth January 20, 2017

Moon and Aldebaran Coloring the eye of the bull January 8, 2017

Featured Images

Star cluster M47

Blue Gems April 2, 2021


Colorful Beak July 28, 2018

Betelgeuse, Aldebaran, and the Sun

Seeing Orange April 1, 2017

M3, a globular star cluster

Reborn Stars March 17, 2015