Mr. Hartan's Science Class
"Knowledge is a reckoning . . . a way to assess your location, your true position, not a strategy for improving your position." -Walter Kirn-Archive for November, 2009
A.D. 1054
The nebula is the remnant of a stellar explosion 6,000 light-years from Earth that was so powerful people saw the burst in A.D. 1054, according to NASA.
