"Even if a planet is in the habitable zone, if it has too small a water inventory, it transitions to an uninhabitable state." ...

Growing up, I was taught that there were nine planets in the solar system. That all changed in 2006, when the International ...

We went to the public library in Sham Shui Po during our school’s reading week. Hong Kong’s public libraries give us many surprises. Not only is the environment comfortable, but they also have many ...

Jupiter is huge when it comes to planets in our solar system, but it turns out there's actually an upper limit when it comes ...

With a rare black moon and the peak of the year's first major meteor shower already behind us, January is shaping up to be an ...

A rare four-planet conjunction will be visible most of this month as Venus, Jupiter, Saturn, and Mars light up the sky.

A few decades ago, the Solar System had nine planets, but in 2006 the International Astronomical Union reclassified Pluto as ...

Earth spins as it orbits the Sun, and the solar system is orbiting the galactic center. So, if I go outside and look up, in ...

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...

NASA's James Webb Space Telescope has captured a unique image that revealed 44 individual stars in a galaxy 6.5 billion light ...

NASA’s Parker Solar Probe could solve the mysteries of the solar wind and test Einstein’s theory of relativity.