The Milky Way was once a textbook example of how a spiral galaxy should form and evolve. Now a wave of new observations and ...

By tracking these stars back to where they came from, scientists can map the gravitational field of the Milky Way. This helps ...

Globular clusters are often described as ancient, tightly bound fossils of the early Milky Way. It has been believed that ...

What's the size of the Milky Way galaxy? Learn how, depending on your definition, the size can change.

Using data from the James Webb Space Telescope, astronomers traced how Milky Way–like galaxies formed and changed over time.

The Andromeda galaxy helped Edwin Hubble settle a great debate in astronomy. Stocktrek Images via Getty Images A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his ...

Astronomers analyzing the interstellar object known as 3I/ATLAS say new trajectory and composition data point to an origin ...

All of the people and mountains and planets and stars that you see around you only make up 15% of the universe's mass. The ...

The Milky Way is our home galaxy with a disc of stars that spans more than 100,000 light-years. While the Milky Way is generally always visible from Earth, certain times of year are better for ...

The Milky Way could be coming to a sky near you. The billions of stars comprising our home galaxy should appear especially vibrant in late-May as the band arcs across the night sky. The reason has ...