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An orange supergiant star 650 light-years away in the constellation Orion. It forms Orion’s shoulder, and is the constellation’s second-brightest star, after Rigel. It is expected to end its life with a titanic explosion known as a supernova.


Orion, the Hunter

Orion, the Hunter May 25, 2010

Radio Programs

Seeing Orange Puffing up like orange balloons April 1, 2017

Giant Cannibal A giant star becomes a cannibal March 16, 2017

Betelgeuse Explodes Death gets closer for a giant star December 30, 2016

Birth of a Giant Locating the birthplace of a giant December 29, 2016

Moon and Betelgeuse The life and times of a supergiant November 16, 2016

Interferometry Taking the measure of a giant February 8, 2016

Moon and Betelgeuse Tracking a big, brilliant star August 8, 2015

Moon and Aldebaran Similar but different lights near the Moon August 6, 2015

Moon and Betelgeuse The “messy” space around a giant star November 7, 2014

Uncertain Giant Taking the measure of a giant star November 22, 2013

Orion Rising Jumbo stars climb into view November 21, 2013

Messy Giant Kicking up dust around a giant star April 11, 2013

Winter Milky Way III Getting armed for a trip through the galaxy February 16, 2012

Featured Images

Betelgeuse, Aldebaran, and the Sun

Seeing Orange April 1, 2017

Infrared view of Betelgeuse

Messy Star April 12, 2013

Visible- and infrared-light views of Orion

Double Vision January 25, 2013

Orion, Jupiter, and other sights in late November

Orion Rising November 26, 2012

Plumes of gas spew into space from the roiling surface of Betelgeuse, the bright

Stellar Timebomb December 1, 2011