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 ...

The end of this entry's definition reads: "The largest known dwarf planets are: Eris, Pluto, Ceres, Makemake, and 2015 RR245." Why is 2015 RR245 listed as one of the largest dwarf planets? For ...

The findings could change how we view planetary systems in their afterlife. A white dwarf star has been caught in the middle of consuming a planetary relic, offering fresh clues as to what happens to ...

A 3-billion-year-old white dwarf, the core of a dead star, consumed an exoplanet from its former planetary system. Credit: NASA / ESA / Joseph Olmsted illustration A dead star core about 145 ...

This marks the first time astronomers have observed the formation of a ring system. Saturn isn't the only planet in our solar system with a ring system. While Saturn's rings are the most dramatic, the ...

In approximately 5 billion years, the sun will deplete its hydrogen fuel and collapse under its own gravity, becoming a white dwarf. Though Earth-sized, this dense remnant will retain much of the ...

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? George Santos' prison ...