Anne's Image of the Day: Globular Cluster Messier 2

Anne’s Image of the Day: Globular Cluster Messier 2

July 27, 2013 Messier 2, a globular cluster in Aquarius Image Credit: NASA/ESA /HST/STScI, via WikiSky Messier 2 (also known as NGC 7089) is a globular cluster of about 175 light-years across, located some 37,500 light-years away from Earth in the constellation of Aquarius (the Water-Bearer), five degrees north of the star Beta Aquarii. It [continue reading]

The Sculptor Galaxy and the Limits to Galactic Growth

The Sculptor Galaxy and the Limits to Galactic Growth

  Astronomers have long assumed that when a galaxy produces too many stars too quickly, it greatly reduces its capacity for producing stars in the future. Now, a group of astronomers that includes Fabian Walter from the Max Planck Institute for Astronomy were able to obtain the first detailed images of this type of self-limiting [continue reading]

Quasars Influence Galaxy Growth

Quasars Influence Galaxy Growth

  Quasars are among the brightest, oldest, most distant, and most powerful objects in the Universe. Powered by massive black holes at the center of most known galaxies, quasars can emit enormous amounts of energy, up to a thousand times the total output of the hundreds of billions of stars in our entire Milky Way. [continue reading]

Anne's Image of the Day: Spiral Galaxy NGC 3521

Anne’s Image of the Day: Spiral Galaxy NGC 3521

July 26, 2013 NGC 3521, a spiral galaxy in Leo Image Credit & Copyright: R. Jay GaBany, Cosmotography (http://www.cosmotography.com) NGC 3521 (sometimes called the Bubble Galaxy) is a spiral galaxy of some 50,000 light-years across, located a mere 26.2 million light-years away from Earth in the constellation of Leo (the Lion), while it is receding [continue reading]

Anne's Image of the Day: The Ear Nebula

Anne’s Image of the Day: The Ear Nebula

July 25, 2013 The Ear Nebula, a planetary nebula in Cygnus Image Credit: T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOAO/AURA/NSF) The Ear Nebula (designated IPHASX J205013.7 + 465518) is a newly discovered, bipolar planetary nebula of about 6′ long in the northern constellation of Cygnus (the Swan), about 2 degrees northeast of [continue reading]

Anne's Image of the Day: Spiral Galaxy Messier 61

Anne’s Image of the Day: Spiral Galaxy Messier 61

July 24, 2013 Messier 61, a barred spiral galaxy in Virgo Image Credit & Copyright: Robert Gendler (http://www.robgendlerastropics.com) Messier 61 (also known as NGC 4303) is a very bright barred spiral galaxy of some 100,000 light-years across, located only about 52.5 million light-years away from Earth in the constellation of Virgo (the Virgin), while it [continue reading]