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

New research suggests that most of the atoms within the human body likely spent part of their lives drifting beyond the Milky ...

Accessible to anyone the world over, witnessing the majesty of the solar system, including the Milky Way, and its billions of ...

The Sun, the planets, and all else that constitutes the solar system are hurtling toward the star Lambda Herculis, some 370 ...

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

It proved the Andromeda Nebula is immensely distant from Earth, demonstrating that the Milky Way is not the whole universe, ...

Astronomers have discovered 85 possible exoplanets outside the Solar System which could potentially sustain life after ...

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

Looking at a distant galaxy means looking back in time.

The newcomer replacing Pluto presently goes by “Planet Nine.” If and when it finally shows up, it will get the honor of a ...

A spacecraft has beamed back some of the best close-up photos yet of Mercury’s north pole. The European Space Agency released ...