Long tidal tails detected in the galaxy pair Arp 269

Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), Chinese astronomers have observed a pair of galaxies known as Arp 269. They detected extended tidal tails emerging from this system. The finding was ...

M84: 'H' is for hot and huge in Chandra image

With a single letter seemingly etched in the X-ray glow around it, a giant black hole at the center of a massive elliptical galaxy is making a mark on its surroundings.

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