NGC 5643's active galactic nucleus isn't the brightest source of X-rays in the galaxy, though. Researchers using ESA's XMM-Newton discovered an even brighter X-ray-emitting object, called NGC 5643 ...

A grand spiral galaxy takes center stage in a new image from the Hubble Space Telescope. The galaxy, known as NGC 5643, is located roughly 40 million light-years from Earth in the constellation Lupus.