Take a deep breath: the universe is not just big it’s mind-bogglingly, practically scandalously huge. And it’s growing. A ...

The idea that the universe is expanding was first proposed by Edwin Hubble in the late 1920s and has been repeatedly backed ...

The Andromeda galaxy is also known as Messier 31. It is a spiral galaxy located about 2.5 million light-years from Earth. On ...

Is the Hubble constant—a key part of how we measure the expansion of our universe—in a crisis? Some cosmologists say yes.

Edwin Hubble uses the telescope at the Mount Wilson Observatory. Photo by Ann Ronan Pictures/Print Collector/Getty Images Print Collector. Estimating distances in astronomy is challenging.

In short, Edwin Hubble is the man who wiped away the ancient universe and discovered a new universe that would shrink humanity's self-perception into being an insignificant speck in the cosmos.

A new composite image of the Andromeda Galaxy is offering an unprecedented view of our closest spiral galactic neighbor. Composed by NASA and international space partners, the image combines data from ...

That Rich was presenting the story of Edwin Hubble at the January 2025 AAS meeting was symbolic, for it was at the 33rd meeting of the AAS, a century ago on January 1, 1925 in Washington, D.C ...

Hubble Space Telescope's 35th anniversary: See NASA's new out-of-this-world images The Hubble Space Telescope, launched 35 years ago, has blown our minds with its striking images of far-away ...

Space Week is Oct. 4-10, so here are some of NASA’s latest discoveries and why Edwin Hubble’s history-making photo, taken on this day in 1923, revolutionized astronomy. This image above is ...

In commemoration of Edwin Hubble's discovery of a Cepheid variable class star, called V1, in the neighboring Andromeda galaxy 100 years ago, astronomers partnered with the American Association of ...