galaxy Example Sentence:

Since the lifetime of a planet like ours is several billion years, we can expect that, if other civilisations do survive in our galaxy, their ages will range from zero to several billion years.

⇑ Translate the sentence above by Google ⇑

Related: galaxy

Prev: According to previous speculation, these strands were gases that had been blown out by an explosion in the galaxy.

Next: Isn't that strange that the Milky Way is the galaxy that the planet earth is in, and most of us have never seen it?