Astronomers are raising concerns about the impact of light pollution from a renewable energy project on the world’s most ...

Hubble Space Telescope mapped Andromeda, revealing a chaotic history shaped by mergers. A 2.5-billion-pixel mosaic shows 200 ...

Astronomers are sounding alarm bells as the world's most precious sky-observing location faces a risk of being blinded by ...

In the years following the launch of NASA's Hubble Space Telescope, astronomers have tallied over 1 trillion galaxies in the universe. But only one galaxy stands out as the most important nearby ...

The Helix Nebula is an example of a planetary nebula. Though it looks like a bubble or eye from Earth’s point of view, the Helix is actually a trillion-mile-long tunnel of glowing gases. In its center ...

Active galactic nuclei (AGN) are among the most energetic phenomena observed in the universe. These luminous objects, powered ...

Active galactic nuclei are supermassive black holes at the center of certain galaxies. As matter falls into these black holes ...

In 2018, a galaxy about 270 million light-years away from Earth exhibited a major increase in activity. It quieted down again by 2020 -- only to dramatically increase its output again in 2023. At that ...

Lee Feinberg, HWO's principal architect based at Goddard, said in a separate presentation that NASA is currently envisioning ...

How do images taken by the James Webb Space Telescope (JWST) appear so colorful, and where do the colors come from?

NASA's James Webb Space Telescope has captured highly detailed images showing the complex layers of interstellar dust and gas ...

Astronomers have released a set of more than a million simulated images showcasing the cosmos as NASA’s upcoming Nancy Grace ...