They tries to understand the universe, how planets, stars and galaxies are formed; analyzes the light of variable stars or quasars; searches for planets outside the solar system or black …
Finally, there remains one last question: how will the universe end? We know now that it started very small and very hot and that it is today almost cold and …
To begin, I advise you to buy a small bezel 60 mm or 80 mm in diameter and 500 to 900 mm focal length. You can also use a spotting …
With the naked eye you can observe the stars and the constellations and it is also the only way to learn to recognize them by comparing what you see with …
As you have understood according to the season, the Sun illuminates and warms more or less strong certain regions of the Earth. In summer, in Europe it is hot on …
The blue color of the sky is explained by the diffusion of light by the air molecules contained in the atmosphere. Most colors, red, orange and yellow, go through the …
It was Newton, at the age of 23, who discovered in 1666 that the light of the sun was made up of a mixture of colors. By passing the light …