Pluto's demoted status as a dwarf planet turns 20 years old today and isn't even a chink in its armour when it comes to its astrological impact.

In 2006, Pluto was famously demoted from a planet to a dwarf planet. It remains the most famous dwarf planet today, but there are others in our solar system, including potentially hundreds that ...

Picture a star, about half the sun's mass shining with a dim red light. Lumbering around it on a 5,000-year orbit is a huge ...

NASA's Dawn mission to the main asteroid belt, granted a second extended mission earlier this year, will end later next year after a final set of close-up observations of the dwarf planet Ceres. Pluto ...

The planet likely lost whatever volatiles it had long ago, and the red dwarf star it orbits is responsible. Gliese 367 is a red dwarf star (M dwarf) about 30 light-years away with three known ...

A Southwest Research Institute-led team has reported the first detection of gas on the distant dwarf planet Makemake, using NASA's James Webb Space Telescope (JWST). This discovery makes Makemake only ...