41. A never-before-seen ring of X-rays has been discovered surrounding the heart of the massive crab nebula in space, NASA announced Tuesday. 42. Some say that the southward migration began on May 24, 1064 CE, after the Crab Nebula events from May to July 1054. 43. While his explanation was initially considered implausible, the discovery of a pulsar in the Crab Nebula led to the theory's universal acceptance. 44. It would not be so popular were men actually from another celestial entity _ say, that silly pulsar within the Crab nebula . 45. In 1965, Antony Hewish and Samuel Okoye discovered " an unusual source of high radio brightness temperature in the Crab Nebula ". 46. Gamma radiation in the TeV range emanating from the Crab Nebula was first detected in 1989 by the Whipple Observatory at Mt. 47. In late July, Saturn will appear to float in front of the Crab nebula , a cloud of glowing gas in the constellation Taurus. 48. Using his newly built spectrograph, Mayall was the first to determine the radial velocities of many knots of gas in the Crab Nebula . 49. Theoretical models of supernova explosions suggest that the star that exploded to produce the Crab Nebula must have had a mass of between. 50. In 1971 he and his colleagues discovered pulsed gamma rays with energies greater than 200 MeV from the pulsar in the Crab Nebula .
