Our Solar System is home to many unique planetary bodies, including protoplanets and dwarf planets. Here are the unique ...

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 ...

The status of Pluto not withstanding, our solar system has 8 planets, but one astronomer believes we used to have a ninth ...

Twenty years after Pluto became a dwarf planet, people are still fighting over its status. Experts explain why the debate feels so personal.

It is hard to believe that 20 years ago, on Aug. 24, 2006, our beloved Pluto was reclassified as a dwarf planet. Pluto ...

Planets appear to be common around stars in our home galaxy, the Milky Way. Astronomers have found planets not just for stars like our sun, but also for smaller, cooler red dwarfs and other types of ...

A team of scientists at the Institute for Advanced Study School of Natural Sciences in Princeton, New Jersey, might have found a new dwarf planet, potentially leading to more evidence of a theoretical ...

Small, low-mass stars like red dwarfs are the most common type of star in our galaxy. And astronomers have also found many exoplanets orbiting them. On June 27, 2025, a new study led by Heidelberg ...