Almost 10 years ago, a NASA spacecraft was able to take several photos of Pluto, known for decades as a planet before it was ...

Nevertheless, because it orbited the Sun like a planet, it was classified as a planet and named Pluto, after the god of outer darkness ... alone in its region of space, much as Ceres had seemed ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

In 2006, the International Astronomical Union (IAU) decided that a large celestial object is a planet only if its gravitational orbit around the sun makes it round and if it’s big enough to ...

After almost a decade in space, the New Horizons probe's close encounter with Pluto lasted just six days as it hurtled past at nearly 50,000 kilometres an hour. I was lucky enough to witness ...

Pluto isn’t the only dwarf planet in our solar system's outer reaches. Now is an ideal time to look for the egg-shaped Haumea, says Abigail Beall ...

Your weekly horoscope for April 20-26, 2025, brings insights from Venus, Pluto, and the North Node. Expect self-revelation ...