The Vera Rubin Observatory is expected to discover 20 billion new galaxies over the next decade. This image shows another ...

The images reveal breathtaking views of star-forming regions, including massive and colorful gas and dust clouds swirling 9,000 light-years from Earth. Located atop the summit of Cerro Pachón in ...

This might sound like an obvious thing for a professional stargazer to say. But astrophysicist Federica Bianco was reacting ...

In early 2017, the two of us, along with a few others, refreshed the debate on the definition of planet in scientific nomenclature. The International Astronomical Union’s (IAU) historic ...

Physics Professor Robert Nemiroff, and a photo of the Crab Nebula by the James Webb Space Telescope that was featured on NASA's Picture of the Day website on Nov. 9, 2023.

On Monday, NASA chose another picture taken in Slovakia for its Astronomy Picture of the Day. Taken by Czech astrophotographer Petr Horálek on early Sunday morning near the town of Tornaľa, ...

Astronomer proposes new definition of a planet In 2006, Pluto was demoted to a minor planet. Now, one astronomer is trying to set the upper limit for how big planets can be.

Cosmology is a branch of astronomy that involves the origin and evolution of the universe, from the Big Bang to today and on into the future. According to NASA, the definition of cosmology is "the ...

At the summit of Cerro Pachón, one of Earth’s most powerful telescopes is now capturing some of the oldest light in the universe.