Warm Neptune-size exoplanets are not nearly as common as super-Earths or hot Jupiters — and we are now closer to finding out why. Our galaxy apparently has a dearth of Neptune-size worlds that orbit ...

In 2006, astronomer Alice Quillen of the University of Rochester predicted that a planet of a particular size and orbit must lie within the dust of a nearby star. That planet has now been photographed ...

Astronomers have unexpectedly discovered the heaviest Neptune-like planet yet — one more than four times the mass of our solar system's Neptune — yet it remains a mystery how the world might have ...

A new Neptune-sized Exoplanet with a 'substantial atmosphere' and the potential for water has been identified in deep space, according to a new study. Known as TOI-1231 b, the exoplanet has a 24-day ...

Researchers have discovered a new planet the size of Neptune, approximately 32 light-years away from Earth. A new study, published in the scientific journal Nature, details the discovery of AU Mic b, ...

A team working with data from the dearly departed Kepler space telescope has reported a possible moon orbiting an exoplanet some 5,000 light years away. It falls somewhere between the size of Earth ...

When it comes to planets with large spots, Jupiter and its famous Great Red Spot might spring to mind. But a study has shed new light on a lesser known large spot in our solar system. Using the ...

The Hubble Space Telescope has just photographed a huge dark mass in the clouds of Neptune, making it the first storm spotted there in more than two decades. NASA explained in a press release that the ...