The exoplanet K2-18b could harbor a massive ocean, but scientists will need to study the planet more to see if it’s really ...

The photo of a 9.5-light-year-long cloud within the Eagle Nebula celebrates the space telescope’s upcoming 35th birthday.

K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know ...

A blob of gas seen outside the Milky Way could be a type of starless, dark matter–dominated galaxy. Some scientists are skeptical.

This time, astronomers have used new processing techniques to draw out additional details in celebration of the telescope's ...

The entire universe may be rotating, like its individual parts do, potentially explaining the “Hubble tension,” which perplexes scientists.

In the grand puzzle of the cosmos, one question continues to defy easy answers: how fast is the universe expanding?

Zhúlóng is the most distant spiral galaxy ever seen. It formed 1 billion years after Big Bang, yet has a calm structure like ...

New JWST data strengthens earlier hints that K2-18b, a possible water world 120 light-years away, could host the chemical byproducts of life.

Hubble’s 35‑year celebration brings a vibrant reimagining of the Sombrero Galaxy, revealing hidden dust lanes and far‑flung ...

A fog of long-wavelength infrared light could be produced by dusty, star-forming galaxies that have remained hidden — until now, that is.

Often regarded as a compilation of the world's most visible politicians, artists and cultural figures, this year's "100 Most ...