Editor’s Note: Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The Hubble Space Telescope ...

JWST's stunning image of NGC 346 shows that planets in the early universe didn’t form as quickly as theorists thought.

The Hubble Space Telescope has seen a young planet whirling around a red dwarf star "getting the hiccups." The agency said the exoplanet is so close to its parent star, AU Microscopii, that is ...

This NASA/ESA Hubble Space Telescope image features a luminous tangle of stars and dust called the barred spiral galaxy NGC ...

Yet Hubble's discovery was controversial. Perceived wisdom had been that planets could not have formed so early in the 13.7-billion-year history of the universe because there hadn't been enough ...

As explained in a pre-press paper [PDF] titled “Discovery of a dwarf planet candidate in an extremely wide orbit: 2017 OF201” ...

This region lacks heavier elements—just like the universe did billions of years ago—making it a perfect laboratory to study ...

Hubble's OPAL program has routinely observed the planets once a year when they are closest to the Earth. "Because OPAL now spans 10 years and counting, our database of planetary observations is ...

Some of those seven Earth-sized planets orbiting TRAPPIST-1 may represent our best chance for finding life of some kind outside of our solar system. And now, the Hubble Space Telescope is starting ...