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Articles by Guy McArthur
Lord Rosse's drawings of M97
[M97] Drawing of the Owl Nebula by William Parsons, the Third Earl of Rosse.
M41 possibly recorded by Aristotle
[M41] M41 possibly recorded by Aristotle As reported by A.A. Barrett in an article entitled "Aristotle and Averted Vision," (Barrett 1977), ancient Greek philosopher Aristotle reports in his Meteorologica (Aristotle, c.
Messier Object 86
Messier 86 (M86, NGC 4406) is one of the brightest member galaxies of the Virgo Cluster of Galaxies, and situated close to that cluster's apparent center. M86 has been discovered and cataloged by Charles Messier on March 18, 1781 when he also cataloged 7 more nebulous objects in the same region of the sky, all member galaxies of the Virgo Cluster, and in addition, globular cluster M92.
Supernova 1054 - Creation of the Crab Nebula
Some older sources had speculated that this supernova might have been as bright as the Full Moon (or mag -12). The reason for this assumption was probably the intention to fit its 23-day visibility with older model lightcurves. It was probably also recorded by Anasazi Indian artists (in present-day Arizona and New Mexico), as findings in Navaho Canyon and White Mesa (both AZ, found 1953-54 by William C.
Spiral (and other Disk) Galaxies
Click icon to see a spiral galaxy of Messier's catalog >> Messier's spiral galaxies; Links The icon shows M51, the Whirlpool Galaxy. Among the galaxies, there are apparently three main categories, according to their appearance: the disk galaxies (`cosmic frisbies' according to P. Murdin, D. Allen, and D.
The Leo Triplett (M66 group)
[M65] [M66] This small group of galaxies consists of the Messier objects M65 (NGC 3623) and M66 (NGC 3627) as well as the edge-on spiral NGC 3628. These three galaxies, the heart of the M66 group, form a beautiful and photogenic group which is frequently referred to as the Leo Triplett; Halton Arp has included this group as number 317 in his Catalogue of Peculiar Galaxies (M66 is also Arp 16). Lying at a distance of some 35 million light years, it is probably physically related to the M96 group.
NGC 604 in M33
[M33] Giant diffuse nebula and star forming region NGC 604 in M33 Starforming Nebula NGC 604 in the Triangulum Galaxy M33 in Triangulum Right Ascension 1 : 34.5 (h:m) Declination +30 : 48 (deg:m) Distance 3000 (kly) Apparent Dimension 1 (arc min) Discovered by William Herschel on September 11, 1784. This is a Hubble Space Telescope image (right) of a vast nebula NGC 604 in the Triangulum galaxy M33. This is a site where new stars are being born in a spiral arm of the galaxy.
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