neutron star – Page 4 – Astronomy Now

8 September 2024

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Galactic get-together has impressive light display

12 December 2014 Astronomy Now

NGC 2207 and IC 2163 are two colliding galaxies in the constellation of Ursa Major some 130 million light-years from Earth. Between them they have produced one of the most bountiful collections of ultraluminous X-ray sources (ULXs) known.