The first bubble of hot gas seen around another star has been spotted around the "Moth," just 117 light-years away.

Astronomers have long known the universe is expanding—but exactly how fast remains one of the biggest mysteries in cosmology. Different techniques for measuring the Hubble constant stubbornly disagree ...

A closer look at the Lambda Cold Dark Matter model, its core components, supporting evidence, and why new observations are ...

NASA's Hubble telescope has circled our planet in a low-Earth orbit for decades. But how much longer has become increasingly uncertain.

Pink: Spectrum of eta UMa acquired in a single capture by Mauve on 9 February 2026 with a 5s integration time. Blue: Hubble ...

Hubble tension reveals discrepancies in cosmic expansion rates, leading to investigations of rotating universes and their ...

The Atacama Cosmology Telescope’s final data release confirms a major cosmic discrepancy and rules out many attempted solutions.

In late February, people in the Northern Hemisphere can look up for a special sight: six planets will all be visible from clear and dark night skies. New sonifications from NASA’s Chandra X-ray ...

NGC 6355 has been imaged using NASA's Hubble Space Telescope. The globular cluster of stars lies 50,000 light-years away. Credit: ESA/Hubble & NASA, E. Noyola, R. Cohen Music: Stellardrone - Billions ...

“The Euclid data clearly confirm the presence of the extremely faint, diffuse light of CDG-2, revealing the galaxy behind the ...

Hubble Space Telescope imagery created an HD look at the gas giant planet Jupiter. Credit: NASA Goddard Space Flight Center ...

The interstellar comet 3I/ATLAS is leaving our solar system for good. Here's what to know about its journey and NASA's observations.