6 maio 2017 ano - Formation of the thin disk of the Milky Way Galaxy

Descrição:

Galaxy formed out of a large, fairly spherical cloud of cold gas, rotating slowly in space. At some point in time, the cloud began to collapse in on itself, or condense, in the same way that the clouds which formed individual stars also condensed.

Adicionado na linha do tempo:

Data:

Imagens: