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Both galaxies lie approximately 160 million light-years from Earth. This image shows a globular cluster called NGC 1651 and ...

The Milky Way is so big that, over billions of years, its mass has captured numerous dwarf galaxies, which contain no more than a few billion stars, as satellites. But how many satellite galaxies does ...

The Milky Way is so big that, over billions of years, its mass has captured numerous dwarf galaxies, which contain no more than a few billion stars, as satellites. But how many satellite galaxies ...

Astro-skills used to spot supernovas and spiral galaxies will soon be deployed in disaster relief ... amidst any of the other ...

Anselmi Why is the expansion of our Universe accelerating? Twenty-five years after its discovery, this phenomenon remains one ...

The new observations involve a supermassive black hole that existed when the cosmos was about 11% its current age.

The European Space Agency's Euclid satellite has been busy at work since ... Euclid's "mosaic" includes over 14 million galaxies, according to researchers, and dozens of millions of stars.