The researchers had initially selected a different target for Hubble.

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NASA’s Hubble Space Telescope has captured some of the most detailed images ever recorded of comets breaking apart in space, offering a direct window into the fragile structure of these ancient icy ...

Astronomers have detected a ghostly galaxy that is almost completely made of dark matter. The faint object was revealed by just four globular star clusters hiding in the Perseus cluster.

A galaxy made almost entirely of dark matter, an elusive form of matter that doesn’t interact with light, was spotted by Hubble 250 million light-years from Earth.

The image features one of the most visually intricate remnants of a dying star: the Cat’s Eye Nebula, also known as NGC 6543.

The local universe may be expanding more slowly than previously thought, a discovery that could relieve a pesky discrepancy ...