Photo de stock - This striking spiral galaxy is home to a supernova, SN 2002fk. Astronomers are using that supernova to measure the expansion rate of the universe. Elements of this image furnished by NASA.

Photo de stock: This striking spiral galaxy is home to a supernova, SN 2002fk. Astronomers are using that supernova to measure the expansion rate of the universe.

Mots-clés utilisés

Choisir des mots clés multiples