Observing the Universe
Conditions d’achèvement
Consulter le glossaire à l’aide de cet index
Spécial | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Tout
G
GalaxyA massive collection of stars, gas, dust, planets, and dark matter held together by gravity. | |
Galaxy ClusterA group of galaxies bound together by gravity. | |
Gamma raysThe highest-energy electromagnetic waves with the shortest wavelengths. | |