Carnival of Space #273 is hosted by Weird Warp!
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The above image (in false color) indicates red, orange and green clouds in Saturn’s northern hemisphere which are the end of the 2010-2011 storm.
If you’d like to learn more about the Cassini mission, and NASA’s other solar system exploration missions, visit: http://www.nasa.gov/topics/history/index.html
Source: NASA Image of the Day Gallery
Quasars (quasi-stellar object) are extremely powerful objects. Powered by the emissions of powerful radiation from a central super-massive black hole, the light can often appear to astronomers on Earth as a jet-like feature. Additionally, if the beam of light emitted from the central black hole points directly at Earth, the accretion disk of material around the black hole, and the resulting “jet” can appear as a quasar, which typically outshine its host galaxy by over a hundred times. The team speculates that the black hole is devouring the equivalent mass of a few suns per year. It may have been eating at a more voracious rate earlier to bulk up to an estimated mass of three billion solar masses in just a few hundred million years.
“If you want to hide the stars with dust, you need to make lots of short-lived massive stars earlier on that lose their mass at the end of their lifetime. You need to do this very quickly, so supernovae and other stellar mass-loss channels can fill the environment with dust very quickly,” said Rogier Windhorst of Arizona State University (ASU), Tempe, Ariz. “You also have to be forming them throughout the galaxy to spread the dust throughout the galaxy,” added Matt Mechtley, also of ASU.
I’ll be on a posting hiatus for the foreseeable future due to a family emergency.
Thank you all for your understanding, and kind thoughts during this trying time.