mei 202013
 
Anne's Picture of the Day: Planetary Nebula NGC 7354

May 20, 2013 NGC 7354, a small planetary nebula in Cepheus Image Credit: Bruno Conti, ESA/Hubble & NASA NGC 7354 is a small, relatively bright planetary nebula of about half a light-year across, located about 4,200 light-years away from Earth in the northern constellation of Cepheus (named after Cepheus, King of Aethiopia in Greek mythology). [continue reading]

apr 102013
 
Anne's Picture of the Day: Reflection Nebula NGC 7129

April 10, 2013 NGC 7129, a reflection nebula in Cepheus Image Credit & Copyright: Adam Block/NOAO/AURA/NSF (http://skycenter.arizona.edu/gallery/Nebulae/NGC7129) NGC 7129 is a rosebud-shaped reflection nebula of about 10 light-years across, located some 3,330 light-years away from Earth in the northern constellation of Cepheus. It is home to a young open cluster which contains more than 130 stars less [continue reading]

jan 252013
 
Anne's Picture of the Day: The Cave Nebula

January 25, 2013 The Cave Nebula, an emission nebula in Cepheus Image Credit & Copyright: Adam Block/Mount Lemmon SkyCenter/University of Arizona (http://www.caelumobservatory.com/index.html) The Cave Nebula (Sharpless 155 or Sh2-155) is a dim and very diffuse bright emission nebula surrounded by dust. It has a radius of about 35 light-years, and is located some 2400 light-years [continue reading]