Scientists have known for nearly a century that the universe is expanding, with galaxies moving away from each other over time. The speed of this expansion today is called the Hubble constant. But ...

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 ...

While NASA’s ancien régime imposed a death sentence on the International Space Station, the super-icon can still be saved by NASA’s new wunderkind leader and by Congress.

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.