sep 182013
 
Anne's Image of the Day: Spiral Galaxy Messier 88

September 18, 2013 Messier 88, a spiral galaxy in Coma Berenices Image Credit & Copyright: Adam Block/Mount Lemmon SkyCenter/University of Arizona (http://skycenter.arizona.edu/gallery/Galaxies/M88) Messier 88 (also known as NGC 4501) is a spiral galaxy of about 130,000 light-years across, located almost 60 million light-years away from Earth in the constellation of Coma Berenices (Berenice’s Hair), while [continue reading]

aug 272013
 
Anne's Image of the Day: Spiral Galaxy Messier 58

August 27, 2013 Messier 58, a spiral galaxy in Virgo Image Credit & Copyright: Adam Block/Mount Lemmon SkyCenter/University of Arizona (http://skycenter.arizona.edu/gallery/Galaxies/M58) Messier 58 (also known as NGC 4579) is a barred spiral galaxy of some 107,000 light-years across with an estimated mass of 300 billion solar masses, located approximately 68 million light-years away from Earth [continue reading]

mrt 282013
 
Anne's Picture of the Day: Spiral Galaxy NGC 1097

March 28, 2013 NGC 1097, a barred spiral galaxy in Fornax Image Credit & Copyright: R. Jay GaBany, Cosmotography (http://www.cosmotography.com) NGC 1097 (also known as Arp 77) is a relatively bright barred spiral galaxy of some 125 thousand light-years across, located about 45 million light-years away in the southern constellation of Fornax (the Furnace). It [continue reading]

dec 152012
 
Anne's Picture of the Day: The Eye of Sauron

December 15, 2012 The Eye of Sauron, a spiral galaxy in Canes Venatici Image Credits: X-ray: NASA/CXC/CfA/J.Wang et al.; Optical: Isaac Newton Group of Telescopes, La Palma/Jacobus Kapteyn Telescope, Radio: NSF/NRAO/VLA The Eye of Sauron (NGC 4151) is an intermediate spiral Seyfert I galaxy of about 37,540 across, located some 43 million light years away [continue reading]

okt 142012
 
Anne's Picture of the Day: Circinus Galaxy

October 14, 2012 Circinus Galaxy, an active spiral galaxy in Circinus Image Credit: Andrew S. Wilson (U. Maryland) et al., WFPC2, HST, NASA Circinus Galaxy (ESO 97-G13), is an active spiral galaxy (Type Seyfert II), located about 13 million light-years away in the Circinus constellation, just below the Galactic plane. The Circinus Galaxy is one [continue reading]

apr 292012
 
A New Paradigm for Active Galactic Nuclei

  Seyfert galaxies are similar to normal galaxies like our own Milky Way except in one critical respect: their nuclei are fantastically bright, in extreme instances as luminous as 100 billion suns. Astronomers think that these huge energies are generated in such active galactic nuclei by processes around their massive black holes. Matter, as it [continue reading]