NASA's Fermi shows that Tycho's star shines in gamma rays

NASA's Fermi shows that Tycho's star shines in gamma rays: It's often called "Tycho's supernova" after the great Danish astronomer Tycho Brahe, who gained renown for his extensive study of the object. Now, years of data collected by NASA's Fermi Gamma-Ray Space Telescope reveal that the shattered star's remains shine in high-energy gamma rays.