Sentences with phrase «old galaxy filled»
Given a 10 - billion - year - old galaxy filled with stars and planets, and an Earth less than half that age, Fermi guessed we are unlikely to be the first technological culture on the galactic stage.
https://www.scientificamerican.com/ Not exact matches
The two galaxies, first discovered by the South Pole Telescope at NSF's Amundsen - Scott South Pole Station in Antarctica, were massive and star - filled at a time when the cosmos was less than a billion years old.