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

January 5, 2005, is an astronomical anniversary that is not really marked but should be. It saw the discovery of dwarf planet ...

An artist’s impression of the white dwarf star WD1054–226 orbited ... as well as through gravitational interactions between planets. Our own solar system, for example, had a migration phase ...

“An Earth-like planet far beyond Neptune could redefine our understanding of the solar system,” says Lykawka. He adds, “It would not only restore the count of nine planets but also challenge ...

The universe, the cosmos, the entire solar system—it’s a never-ending playground for humanity’s curiosity. But what if there’s more to uncover? What if a new planet is lurking in the far reaches of ...

An artistic impression of Trappist-1 b shortly before it passes behind the cool, red dwarf star ... An Earth-sized planet in a star system very similar to our solar system may have ...

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

The solar system may hold ... indicate an unseen massive planet. The Kuiper Belt is a distant region of icy bodies. It extends beyond Neptune and includes Pluto and dwarf planets.

19, 2024 — Scientists have unveiled groundbreaking research on the origins of lunar water, offering insights that could reshape our understanding of the Earth-Moon system and the broader solar ...

The Kuiper Belt, a vast region of icy objects left over from the solar system’s formation, extends far beyond Neptune and is home to Pluto and other dwarf planets. Astronomers believe that ...

the remaining gas planets inhabit deeper space. The solar system is also home to many other cosmic bodies including asteroids, moons and dwarf planets such as Pluto. What's this? Oh noooo ...

In 2005, Eris was discovered. It was considered the largest known dwarf planet in the solar system until a year later when Pluto was downgraded from being a planet. In 2008, tribal violence ...