To begin, I advise you to buy a small bezel 60 mm or 80 mm in diameter and 500 to

As you have understood according to the season, the Sun illuminates and warms more or less strong certain regions of

The blue color of the sky is explained by the diffusion of light by the air molecules contained in the

It was Newton, at the age of 23, who discovered in 1666 that the light of the sun was made

For thousands of years men believed that the Moon was so remote that it was inaccessible. When someone was told

Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum. The word usually refers to visible light, which

Our Galaxy forms a disc a little thicker in the center that is observed in profile, which is why the