Corona Borealis, the Northern Crown, and Corona Australis, the Southern Crown, are two small constellations among the 48 listed by the 2nd- century astronomer Ptolemy. Corona Borealis, which generally represented the crown given by the god Dionysus to the Cretan princess Ariadne, is in the Northern Celestial Hemisphere, while Corona Australis, associated with Sagittarius or Centaurus, is in the Southern. Corona Borealis boasts the highly variable stars R and T Coronae Borealis and the huge Corona Borealis Supercluster. Corona Australis, lying alongside the plane of the Milky Way, hosts Epsilon Coronae Australis, the brightest example of a W Ursae Majoris variable in the southern sky. It also contains one of the closest star-forming regions to our Solar System, about 430 light years away—a dusty dark nebula known as the Corona Australis Molecular Cloud, with stars at the earliest stages of their lifespan.

Read more: https://en.wikipedia.org/wiki/Corona_Borealis

_______________________________ Today's selected anniversaries:

1819:

Fifteen people were killed and 400–700 others were injured when cavalry charged into a crowd gathered at St Peter's Field, Manchester, England, to demand the reform of parliamentary representation. https://en.wikipedia.org/wiki/Peterloo_Massacre

1863:

After Spain had annexed the Dominican Republic, rebels raised the Dominican flag in Santiago de los Caballeros to begin the War of Restoration. https://en.wikipedia.org/wiki/Dominican_Restoration_War

1927:

The Dole Air Race began; eight fixed-wing aircraft competed to fly from Oakland, California, to Honolulu, Hawaii, but only two successfully completed the flight. https://en.wikipedia.org/wiki/Dole_Air_Race

1960:

Joseph Kittinger parachuted from a balloon over New Mexico at 102,800 feet (31,300 m), setting records for high-altitude jump, free- fall height, and fastest speed by a human without an aircraft. https://en.wikipedia.org/wiki/Joseph_Kittinger

2009:

Y. E. Yang won the 2009 PGA Championship to become the first Asian-born golfer to win a men's major golf championship. https://en.wikipedia.org/wiki/Yang_Yong-eun

_____________________________ Wiktionary's word of the day:

tormentress: A female tormentor. https://en.wiktionary.org/wiki/tormentress

___________________________ Wikiquote quote of the day:

True greatness is free, kind, familiar and popular; it lets itself be touched and handled, it loses nothing by being seen at close quarters; the better one knows it, the more one admires it.   --Jean de La Bruyère https://en.wikiquote.org/wiki/Jean_de_La_Bruy%C3%A8re