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

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

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.

Veiled in gas and clouds, the Milky Way ... system will merge into a single star within one million years, which helps explain the apparent lack of binary stars in the center of the galaxy.