Concept
Cold Neutral Medium
Cool, denser neutral hydrogen clouds.
Neutral hydrogen at 30–100 K forming filaments and clouds, transitioning to molecular clouds at higher densities.
Overview
Neutral hydrogen at 30–100 K forming filaments and clouds, transitioning to molecular clouds at higher densities.
See also
Big Bang Nucleosynthesis
The first few minutes that forged hydrogen and helium.
Warm Neutral Medium
Diffuse warm hydrogen filling much of the galaxy.
The Big Bang
How everything began, 13.8 billion years ago.
Black Holes
Regions where gravity stops light itself.
Dark Matter
The invisible mass holding galaxies together.
Dark Energy
The mysterious force accelerating the universe.