In ancient Egypt, Sirius was a true star of the night sky. It is the brightest star seen from Earth, easy to spot even without...
Pluto was discovered in 1930 by American astronomer Clyde Tombaugh. At the time, it was the ninth planet, right after Neptune, at the edge of...
The Moon always shows the same side to the Earth due to what is known as synchronous rotation. This means that the Moon takes exactly...
