Tibet ASgamma (IMAGE) Chinese Academy of Sciences Headquarters Caption The left figure shows the Tibet ASgamma experiment observed the highest energy gamma rays beyond 100 Teraelectron volts (TeV)from the Crab Nebula with low background noise, the cross mark indicates the Crab pulsar position. And the right figure shows the Crab Nebula taken by the Hubble Telescope Credit NASA Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.