In relation to the Sun, Venus is the second planet after Mercury, just in front of the Earth. It is the only planet that shines stronger than the Sirius star, …
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 …
To answer Pascal’s philosophical questions concerning our place in the universe and the passionate interest of the public, the field of action of scientists could not be limited to astronomy. …