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Dark sky image with some objects around Pinwheel Galaxy (M 101). The quarter in the lower right shows the tail of Ursa Major with the stars Mizar, Alcor and Alkaid.. The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on, unbarred, and counterclockwise spiral galaxy located 21 million light-years (6.4 megaparsecs) [5] from Earth in the constellation Ursa Major.
SN 2011fe, initially designated PTF 11kly, was a Type Ia supernova discovered by the Palomar Transient Factory (PTF) survey on 24 August 2011 during an automated review of images of the Messier 101 from the nights of 22 and 23 August 2011.
Boom.In the colossal Pinwheel galaxy, 25 million light-years away, a star has just exploded and is even visible through small telescopes. The supernova-hunting astronomer Koichi Itagaki discovered ...
The Pinwheel Galaxy. Several bright galaxies are found in Ursa Major, including the pair Messier 81 (one of the brightest galaxies in the sky) and Messier 82 above the bear's head, and Pinwheel Galaxy (M101), a spiral northeast of Alkaid. The spiral galaxies Messier 108 and Messier 109 are also found in this constellation.
Messier 83 or M83, also known as the Southern Pinwheel Galaxy and NGC 5236, is a barred spiral galaxy [7] approximately 15 million light-years away in the constellation borders of Hydra and Centaurus. Nicolas-Louis de Lacaille discovered M83 on 17 February 1752 at the Cape of Good Hope. [8]
The Big Dipper seen from Fujian. The constellation of Ursa Major (Latin: Greater Bear) has been seen as a bear, a wagon, or a ladle.The "bear" tradition is Indo-European (appearing in Greek, as well as in Vedic India), [7] but apparently the name "bear" has parallels in Siberian or North American traditions.
The supernova is located near a prominent HII region, NGC 5461, in an outer spiral arm of the bright galaxy. [3] By 22 May 2023, SN 2023ixf had brightened to about magnitude 11. [5] [6] It could be seen in telescopes as small as 114 mm (4.5 in) [3] and remained visible with backyard telescopes for several months. [10]
The Big Dipper's bowl and part of the handle photographed from the International Space Station. Mizar and Alcor are at the upper right. Mizar and Alcor are at the upper right. In 2009, Alcor was discovered to have a companion star Alcor B, a magnitude 8.8 red dwarf .