The DESI experiment shocked cosmologists with a hint that dark energy varies over time. Now, with more data, the conclusions hold up.

Though tiny, this newfound satellite galaxy around M31 offers big lessons — and questions — about how galaxies evolve.

Young stars enveloped in a transformative cocoon of gas shine brightly in a new image from the Hubble Space Telescope.

Apple packed the best parts of its iOS experience into the iPhone 16e, but I'm not sure its better than the Pixel 8a or ...

It's rare for any observatory to directly image a planet beyond our solar system, called an exoplanet, but the powerful James ...

When I get stressed, I look into the night sky and allow my mind to roam the infinity of space and time. It helps to get your ...

Barnard's Star is a small, dim star of the type that astronomers call red dwarfs. Consequently, even though it is one of the ...

Hubble’s latest image reveals the Small Magellanic Cloud (SMC), a nearby dwarf galaxy visible from Earth without a telescope.

Answer: For near stars, astronomers use a method called parallax. During Earth’s orbit, near stars seem to shift their position against the farther stars. This is called parallax shift. By ...

A supercluster is usually composed of hundreds or even thousands of clusters of galaxies, and these clusters are ...

A major discovery on the outskirts of Andromeda is shaking up our understanding of galactic evolution. Astronomers have found the dimmest and smallest satellite galaxy yet—Andromeda XXXV—forcing them ...

The discovery of the dwarf galaxy Andromeda XXXV --located roughly 3 million light-years away and the smallest yet found in the Andromeda system -- is forcing astronomers to rethink how galaxies ...