Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune ...

Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...

Astronomers may have finally worked out how planets between the size of Earth and Neptune – which aren't found in our Solar ...

One of the biggest recent surprises in astronomy is the discovery that most stars like the Sun harbor a planet between the ...

A potential new type of celestial object has all the makings of a normal small galaxy. It’s rich with the same hydrogen gas ...

Using the Hubble Space Telescope, astronomers have discovered a new type of cosmic object, a cloud of dark matter and gas ...

An exosyzygy – an alignment of three celestial objects around another star – is predicted to happen later this year, but it ...

Scientists measured mass and distance of free floating planet drifting through space without star for first time.

From signs of life on Mars to an interstellar visitor and weakening dark energy, 2025 reshaped space science, raising the ...

On record 2025 as one of the most amazing years in contemporary astronomy, providing findings that would turn our collective ...

With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.

A Carnegie-led team of astronomers detected the strongest evidence yet of an atmosphere around a rocky planet beyond our ...