The Contents of the Universe

atom
Galaxy (Milky Way)
Terra (Earth)
star cluster
Luna (Moon)
molecule (10^-8 meters)
Jupiter
galaxy supercluster
super sundae
Universe
comet
cell
Sol (Sun)
telescope
distance between the Sun and the nearest star (Proxima Centauri)
distance between the Sun and the Earth
distance between the Milky Way and the Andromeda galaxies

10^-6 meters (1 micron)

H₂O CO₂ NH₃

A molecule of water, with a central oxygen atom surrounded by two smaller hydrogen atoms. A molecule of carbon dioxide, with a central carbon atom surrounded by two oxygen atoms. A molecule of ammonia, with a central nitrogen atom surrounded by three smaller hydrogen atoms.

water carbon dioxide ammonia

[NMSU, N. Vogt]