Moons page — updated on December 6th, 2018

Nebulae page — updated on August 28th, 2017

Thursday, March 13, 2014

Corona Borealis

CORONA BOREALIS, also known as the Northern Crown, is a small but noticeable constellation forming a semicircular 'crown' with seven main stars. It is prominently visible in the Northern Hemisphere's Spring and Summer seasons, while it is harder to find in the Fall and Winter skies. In the Southern Hemisphere, Corona Borealis is only visible near the horizon in the northern sky, during the seasons of Fall and Winter (Spring and Summer in the Northern Hemisphere). From the Northern Hemisphere perspective, the constellation is west of Bo├Âtes (an easily identifiable constellation with a bright star, Arcturus), south and east of Hercules, and north of Serpens Caput (the eastern part of Serpens, which symbolizes a snake's head). Alphekka (Alphecca) is Corona Borealis' brightest star with an apparent magnitude brightness ranging from 2.21 to 2.32, and Nusakan is the second brightest (3.7).

Interesting Fact: Several exoplanets — planets that are outside of our Solar System — have been discovered in Corona Borealis' region!

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Blog Background

The background has three Hubble Space Telescope images, which are accessible at this Hubble webpage:

— LH 95 is a star-forming region in the Large Magellanic Cloud, Dorado constellation.

— Ant Nebula (also called Menzel 3) is an aptly-named planetary nebula located in the constellation Norma.
— Egg Nebula (also called CL 2688) is a protoplanetary nebula in the constellation Cygnus.

HubbleSite Image Links: LH 95, Ant Nebula, and Egg Nebula