Blue loop
Videos
In the field of stellar evolution, a blue loop is a stage in the life of an evolved star where it changes from a cool star to a hotter one before cooling again. The name derives from the shape of the
Stellar evolutionary tracks, some showing blue loops in the more massive red giants
Canopus
Videos
Canopus is the brightest star in the southern constellation of Carina and the second-brightest star in the night sky. It is designated α Carinae, which is romanized to Alpha Carinae. With a visual app
Blue loop
…Notable examples of stars believed to be in a blue loop phase include: Canopus Arneb…
An image of Canopus by Expedition 6
Wide angle view showing Canopus and other prominent stars with the Milky Way
Canopus is the brightest star in the constellation of Carina (top).
Averroes, who used his 1153 observation of Canopus in Marrakesh while the star was invisible in his native Spain as an argument that the Earth is round