Learn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight Center. Credit: NASA's Goddard Space Flight Center Producer & Director: James ...

The CMZ spans almost 700 light years and contains some of the most dense molecular gas in the galaxy. Over the years, ...

Astronomers have long been puzzled by two strange phenomena at the heart of our galaxy. First, the gas in the central ...

Euclid's first data release offers a breathtaking glimpse into our universe, revealing over 26 million galaxies and ...

Gravity pulls us to earth, a lesson you learn viscerally the first time you fall. Isaac Newton described gravity as a ...

Imagine an infinite universe expanding in all directions. Visualization is impossible. Questions abound. But cosmologist ...

Despite decades of searching for this signal, astronomers have yet to find it. The problem is that our Earth is too noisy, making it nearly impossible to capture this whisper. The solution is to go to ...

Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...

A new idea about cosmic expansion has emerged that might remove the need for dark matter and dark energy altogether.

"The new model can account for both structure formation and stability, and the key observational properties of the expansion of the universe at large." ...

Astronomers may have uncovered a hidden population of galaxies that could rewrite what we know about the universe's evolution ...

Ostriker is responsible for groundbreaking discoveries that forever changed the way astronomers think about what the universe is made of, including the existence of dark matter.