In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

The Largest 'Black Hole Jet' Discovered Is Estimated to Be Twice the Size of Our Milky Way We know black holes to be ...

New research from the SAGA Survey, comparing the Milky Way with 101 similar galaxies, unveils how our galaxy differs ...

Hubble’s work pushed the field of astronomy forward, starting with his paper demonstrating that some objects exist outside ...

The Hubble Space Telescope’s latest stunning images have allowed scientists to solve the mystery of the Bullseye Galaxy’s ...

So how well do you know the Milky Way? Let's test your knowledge of our galaxy's size, age, speed and more with the 15 ...

Researchers believe they have rediscovered a mysterious star system first spotted in 2011. If true, the alien sun and its ...

Space has always captured human curiosity. Whether it's vastness, mystery or its planetary bodies. Many individuals, at some ...

The Bullseye galaxy earned its nickname thanks to its wild number of rings. A smaller galaxy shot through its heart 50 ...

Astronomers discover Quipu, a colossal cosmic structure spanning 1.3 billion light-years, which could reshape our ...

Astronomers have discovered what they are calling the largest-known structure in the universe. Named "Quipu" after an Incan ...

In the heart of our Milky Way galaxy, two gigantic "bubbles" extend roughly 50,000 light-years above and below the galactic ...