WASHINGTON, Feb 14 (Reuters) - Astronomers have observed a planetary system that challenges current planet formation theories, with a rocky planet that formed beyond the orbits of its gaseous ...

One of the longest stellar dimming events ever observed was likely caused by the gigantic saucer-like rings of either an unseen brown dwarf or "super-Jupiter" blocking its host star's light, ...

Hunt for the names of mysterious dwarf planets, most of which orbit on the fringes of our solar system When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

In an ancient star system expected to be stable and dormant, scientists found a 3 billion-year-old white dwarf star still tearing apart massive quantities of rock. “The rate we’ve seen rock consumed ...

A newly discovered dwarf planet could hold the key to unlocking the mysteries of our solar system’s outer reaches — but what could it mean for humanity's future in space? Social Security, Medicare are ...

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...

The detection of the molecule phosphine in a brown dwarf’s atmosphere may help astronomers in their search for life elsewhere in the Milky Way. By Katrina Miller On a brown dwarf dozens of light years ...

More than 50 times further from the Sun than Earth, the tiny dwarf planet Makemake is one of the last places you'd expect to find an intact gaseous atmosphere. Not only is it incredibly cold, being ...

WASHINGTON, Sept 26 (Reuters) - Astronomers using the Hubble Space Telescope have observed a white dwarf - a highly compact stellar ember - that appears to have gobbled up an icy world akin to the ...