A 2012 study on ancient cedar trees in Japan suggested that our planet was hit by a massive gamma ray burst in the century CE. Now, a new study suggests that the cause of this burst was two black holes or two neutron stars merging within our galaxy.
Chandra :: Photo Album :: NGC 6240 :: April 2013 An enormous cloud of hot gas is surrounding two merging spiral galaxies. This gas reservoir contains the mass of 10 billion suns, spans light years, and radiates at more 7 million degrees.
NGC 3190 is a spiral galaxy with tightly wound arms and lying in the constellation Leo. It was discovered by William Herschel in NGC 3190 is member of Hickson 44 galaxy group, estimated at around 80 million light years and consisting of four