Posted inPress Release Chandra X-ray Image Of Galaxy NGC 6240 by SpaceRef EditorApril 15, 2023July 15, 2024 NGC 6240 is a galaxy in which two supermassive black holes are a mere 3,000 light years apart.
Posted inPress Release Colossal Hot Clouds Envelope Colliding Galaxies by SpaceRef EditorApril 30, 2013July 15, 2024
