Studying the universe isn’t easy, and not just because of the massive distances involved. If you want to study the galactic nurseries where stars and galaxies form, you often have to look at areas of the universe where there isn’t any visible light, due to the aforementioned absence of stars.
Click here for original story, Q&A: Astrophysicists study primordial gases to investigate how galaxies are born
Source: Phys.org