baryonic
Made of protons
Baryonic describes matter made of baryons—protons, neutrons, and the atoms they form.
This is ordinary matter: stars, planets, people, everything we can see and touch.
In cosmology, baryonic matter accounts for only about 5% of the universe's total mass-energy, with the rest being dark matter and dark energy: The baryonic content of galaxies is surprisingly small.
Positive nuclear particles
- neutronsUncharged subatomic particles
- nucleonsProtons or neutrons
- quarksFundamental hadron components
- hadronsQuark-containing composite particles
fermions · gluons · up · down · strange · charm · bottom · top
Lightless cosmic mass
- nucleosynthesisAtomic core formation process
- Big BangUniverse's explosive origin
- primordialExisting from the start
- universeComplete system or domain
Luminous celestial bodies
- galaxiesGravitationally bound stellar assemblies
- nebulaeInterstellar gas clouds
- gas cloudsDiffuse interstellar matter collections
- stellarOf or like celestial bodies
galactic · intergalactic · luminous · observable · spectroscopy · redshift
protons
Positive nuclear particles
hadrons · fermions · gluons · up · down · strange · charm · bottom · top · antiprotons
dark matter
Lightless cosmic mass
- nucleosynthesisAtomic core formation process
- Big BangUniverse's explosive origin
- primordialExisting from the start
stars
Luminous celestial bodies
- galaxiesGravitationally bound stellar assemblies
- nebulaeInterstellar gas clouds
- gas cloudsDiffuse interstellar matter collections
stellar · galactic · intergalactic · luminous · observable · spectroscopy · redshift
atoms
Smallest elemental units
carbon · oxygen · nitrogen · ions · isotopes · elements · nuclei · gas · dust · plasma