The first object in the Kuiper belt visited by New Horizons after leaving Pluto was provisionally named Ultima Thule and has recently been renamed Arrokoth.
At the Lund Observatory in Sweden there is a painting of the first realistic representation of our galaxy, the Milky Way. The idea of carrying out this scientific and artistic work came from the Swedish astronomer Knut Lundmark who, at the beginning of the 1950s, set out to represent the Milky Way as a whole.
En el marc de la teoria general de la relativitat, Einstein va postular l’existència de les ones gravitacionals, encara que pensava que mai es podrien detectar.
The last song in Pink Floyd’s LP The Dark Side of the Moon, published in 1973, mentioned it: «There’s no dark side of the Moon really. Matter of fact, it’s all dark. »