Virgo constellation Reference Libraries

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Virgo Cluster
2010-09-16 15:18:29

The Virgo Cluster consists of galaxies at a distance of around 59 Mly away in the constellation Virgo. Containing between 1300 to 2000 galaxies the Virgo Cluster is the heart of the Local Supercluster. Its mass is estimated at 1.2 × 1015 M☉ out to 8 degrees of the cluster's center or a radius of about 2.2 Mpc. Most of the brighter galaxies in the cluster were discovered by Charles...

Markarians Chain
2010-09-08 16:10:01

Markarian's Chain is a stretch of galaxies forming part of the Virgo Cluster. The galaxies get their name because when viewed from earth they form a curved line. The other part of the name comes from the Armenian astrophysicist, B. E. Markarian. Markarian discovered their common proper motion in the mid 1970s. Member galaxies include M84 (NGC 4374), M86 (NGC 4406), NGC 4477, NGC 4473, NGC 4461,...

Virgo the maiden Constellation
2004-10-19 04:45:44

Virgo (the maiden) Constellation -- Location: Zodiac constellation, visible in both Hemispheres; Coordinates: Right Ascension: 13h; Declination: 0; Source: Associated with almost every major female deity in world-wide early civilizations The constellations that are included in the Zodiac - the 12 constellations recognized by Babylonian astronomers through which our Sun, moon, and planets...

Extrasolar Planet
2004-10-19 04:45:41

Extrasolar Planet -- An extrasolar planet is a planet orbiting around a star other than the Sun. Extrasolar planets were first discovered in the 1990s as a result of improved telescope technology, CCD and computer-based image processing which allowed far more accurate measurements of stellar motions. The first extrasolar planets were reported by the astronomer Aleksander Wolszczan in 1993,...

Virgo Cluster of Galaxies
2004-10-19 04:45:40

Virgo Cluster of Galaxies -- This giant agglomeration of galaxies is the nearest big cluster of galaxies, the largest proven structure in our intergalactic neighborhood, and the most remote cosmic objects with a physical connection to our own small group of galaxies, the Local Group, including our Milky Way galaxy. This structure is another discovery by Charles Messier, who noted behind his...

Virgo A Galaxy M87
2004-10-19 04:45:40

Virgo A Galaxy -- Discovered 1781 by Charles Messier. The giant elliptical galaxy M87, also called Virgo A, is one of the most remarkable objects in the sky. It is perhaps the dominant galaxy in the closest big cluster to us, the famous Virgo Cluster of galaxies (sometimes also called "Coma-Virgo cluster" which is more acurate, as it extends into constellation Coma), and lies at the...

Sombrero Galaxy
2004-10-19 04:45:40

Sombrero Galaxy -- Discovered by Pierre Mchain or Charles Messier in 1781. M104 is numerically the first object of the catalog which was not included in Messier's originally published catalog. However, Charles Messier added it by hand to his personal copy on May 11, 1781, and described it as a "very faint nebula." It was Camille Flammarion who found that its position coincided with...

Word of the Day
  • To play, gamble.
  • To impose upon; delude; trick; humbug; also, to joke; chaff.
  • A deceitful game or trick; trickery; humbug; nonsense.
The word 'gammon' in the sense of 'joke, trick' may come from 'backgammon'.