Photo of the day

As mentioned yesterday, Evan and I had a great time looking at Hubble images here.  We loved this picture of a galaxy:

Hubble's Largest Galaxy Portrait Offers a New High-Definition View

This giant spiral disk of stars, dust and gas is 170,000 light-years across, or nearly twice the diameter of our Milky Way galaxy. M101 is estimated to contain at least one trillion stars. About 100 billion of them could be similar to our Sun.

Credit for Hubble Image: NASAESA, K. Kuntz (JHU), F. Bresolin (University of Hawaii), J. Trauger (Jet Propulsion Lab), J. Mould (NOAO), Y.-H. Chu (University of Illinois, Urbana), and STScI

About Steve Greene
Professor of Political Science at NC State http://faculty.chass.ncsu.edu/shgreene

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