Sub-Neptunes are the most common type of planet in our galaxy. Bigger than Earth but smaller than Neptune, these worlds remain deeply mysterious because scientists still do not know what they are made ...

Astronomers now estimate there is at least one planet for every star in our galaxy. These worlds, called exoplanets, are planets that orbit stars outside our solar system. But new research from ...

– January 7, 2026 (London time) – One of the biggest recent surprises in astronomy is the discovery that most stars like the Sun harbor a planet between the size of Earth and Neptune within the orbit ...

What can the galactic habitable zone (GHZ), galactic regions where complex life is hypothesized to be able to evolve, teach scientists about finding the correct stars that could have habitable planets ...

In a blow to anyone dreaming that complex life may exist elsewhere in the universe, a new study suggests we're unlikely to find it around many of the most common stars in the galaxy. Earth-like ...

Scientists have discovered a rogue planet roaming the Milky Way after combining observations from Earth and a space telescope. This rare dual perspective allowed them to weigh the planet and pinpoint ...

Erik Gillis, a PhD student in McMaster University’s Department of Physics and Astronomy, is lead author of a new study revealing that the most common planets in our galaxy don't exist around the most ...