When gas is heated, it takes up more:
solutes plasma fluidity energy space viscosity matter Energy.
A B C D E F G H
If more space between 2 galaxies more space to expand so it moves away faster.
When gas is heated, it takes up more space.
When gas is heated, it takes up more: (A) solutes (B) plasma (C) fluidity (D) energy (E) space (F) viscosity (G) matter (H) Energy.