It is called “astronaut” in Europe and “cosmonaut” in Russia but these words mean the same thing. The job of astronaut is certainly the most dreaming of young people and …
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 …
Compared to the 40m diameter ELT, which will likely be used for 100 years and more, the JWST will fail 10 years after launch due to lack of fuel. If …
Before we consider exploring our galaxy and the universe, we must first and foremost place our home, the earth and the solar system in this vast cosmos. The knowledge we …
Our Galaxy forms a disc a little thicker in the center that is observed in profile, which is why the Milky Way seems very long and quite thin. The stars …