Pluto likely acquired large moon Charon in a “kiss and capture” collision billions of years ago. It may have created a ...

In our solar system, Earth is one of only three worlds that sees temperatures above 32 degrees Fahrenheit, while other ...

We went to the public library in Sham Shui Po during our school’s reading week. Hong Kong’s public libraries give us many ...

Although previous images showed that something was happening on Pluto, with an average temperature of -240C, many people assumed it was a cold and relatively dead world. That was until NASA's 'New ...

Charon is large in size relative to Pluto, and is locked in a tight orbit with the dwarf planet. A new simulation suggests how it ended up there. By Jonathan O’Callaghan Some 4.5 billion years ...

Pluto has had a tough couple of decades. Formerly the ninth planet in our solar system, Pluto was demoted in 2006 to a “dwarf planet.” Only 1,400 miles wide, about half the width of the lower ...

Learn about the size, temperature, and colour of each planet, and discover why Pluto is no longer considered a planet.