The Dutch-led team used NASA's Webb Space Telescope and a telescope in Chile to observe a young star some 1,370 light-years ...

PRAGUE, Czech Republic — The universe really is expanding — astronomers are proposing to rewrite the textbooks to say that our solar system has 12 planets rather than the nine ...

There's a new moon king in our solar system: 12 new moons were discovered around Jupiter, which makes it the planet with the most moons. Jupiter is already the biggest planet in our solar system.

However, these planets aren’t likely covered in oceans like some Kevin Costner 90s flick, they’re instead likely covered in an atmosphere of steam, the researchers believe.

The number of planets around the Sun could rise from nine to 12 - with more on the way - if experts approve a radical new vision of our Solar System. An endorsement by astronomers meeting in Prague ...

The discovery of Gliese 12 b, a nearby possibly habitable exoplanet, is a thrilling development in the quest to find Earth-like planets and, potentially, extraterrestrial life.

The planet, Kepler-138e, doesn't appear to transit in front of the host star, so its presence hasn't been confirmed yet. Assuming it's accurate, however, the presence of Kepler-138e has consequences.

February ends with a treat for sky-gazers: a parade of seven planets across the night sky, including Mercury, Uranus and Neptune alongside typically bright planets such as Mars, Venus, Jupiter ...