gamma

Washington: NASA's Fermi Gamma-ray space telescope has identified the farthest gamma-ray blazars, a type of galaxy whose intense emissions are powered by super-sized black holes. "Despite their youth, these far-flung blazars host some of the most massive black holes known," said Roopesh Ojha, an astronomer at NASA's Goddard Space Flight Center in Greenbelt, Maryland. Light from the most distant object began its journey to us when the universe was 1.4 billion years old, or nearly 10 per cent of its present age. Previously, the most distant blazars detected by Fermi emitted their light when the universe was about 2.1 billion years…