关于这张图
NASA image release January 12, 2010 NASA's Chandra X-ray Observatory reveals the complex X-ray-emitting central region of the Crab Nebula. This image is 9.8 light-years across. Chandra observations were not compatible with the study of the nebula's X-ray variations. To read more go to: <a href="http://geeked.gsfc.nasa.gov/?p=4945" rel="nofollow">geeked.gsfc.nasa.gov/?p=4945</a> Credit: NASA/CXC/SAO/F. Seward et al. <b><a href="http://www.nasa.gov/centers/goddard/home/index.html" rel="nofollow">NASA Goddard Space Flight Center</a></b> enables NASA’s mission through four scientific endeavor…
