A team of professional and amateur Japanese astronomers have found evidence for a thin atmosphere around a small body in the outer solar system. The object is so small that it should not have a ...

Mars is blanketed by a thin, mostly carbon dioxide atmosphere — one that is far too thin to keep water from freezing or quickly evaporating. However, geological evidence has led scientists to conclude ...

The atmosphere most planets start with is often not the same as the one they end up with. Most of the gas present at the formation of a solar system will be hydrogen and helium. But a look through the ...

Artist’s conception of this research showing an imagined time sequence as a star passes behind a TNO with an atmosphere. A team of professional and amateur Japanese astronomers found evidence for a ...

Scientists think they've spied an alien world that lost its atmosphere — then conjured itself a new one. That's according to a new analysis of Hubble Space Telescope observations gathered in 2017 of a ...

Artist’s rendering of TOI-1231 b, a Neptune-like planet about 90 light years away from Earth. NASA/JPL-Caltech Discovering planets beyond our solar system is one thing — we’ve discovered over 4,000 ...

Beyond the reaches of Neptune, the outskirts of our solar system are teeming with thousands of icy celestial bodies like Pluto. For years, it's been an accepted tenet of astronomy that, with the ...

There's a lot we don't know about the planet nearest to us. Venus is shrouded in clouds, making speculation about what's happening on its surface a parlor game for many planetary scientists for ...

Scientists think they've spied an alien world that lost its atmosphere — then conjured itself a new one. That's according to a new analysis of Hubble Space Telescope observations gathered in 2017 of a ...