Large galaxies, like the Milky Way, attract smaller galaxies. Our solar system's cosmic neighborhood spans 100,000 ...

How would you like to see the farthest thing visible to the naked eye? It’s possible, but you’ll need to bundle up and sit ...

Astronomers have identified three ultra-massive galaxies -- nearly as massive as the Milky Way -- already in place within the first billion years after the Big Bang. This surprising discovery was made ...

The Event Horizon Telescope's famous image of Sagittarius A* may depict an artifact, raising questions about the black hole's ...

An international team led by the University of Geneva (UNIGE) has identified three ultra-massive galaxies—nearly as massive ...

Fastest Known Planetary System May Have Been Pushed by Our Galaxy’s Supermassive Black Hole ...

"Beyond the Milky Way lie billions of other galaxies ... Using variable stars as distance markers and the giant telescope on Mount Wilson, Edwin Hubble (then a young and little-known astronomer ...

A century ago this month, a brash astronomer leaked a discovery that opened our view to the cosmic distance scale and the ...

Researchers have made a groundbreaking discovery of a neutron star in the Milky Way that rotates at an astonishing 716 times per second, placing it among the fastest-spinning stars ever observed. The ...

That’s a distance so huge, it’s like going around the Earth’s equator 236 million times. Our Milky Way is believed to be a spiral disk of stars with a big bulge in the middle. It spans well ...

Growing up in Long Beach, California, his parents adhered to a creationist view of the universe. But young Koerner caught ...

How would you like to see the farthest thing visible to the naked eye? It’s possible, but you’ll need to bundle up and sit ...