We need to do a little chemistry
here to understand the importance
of the Big Bang for astrobiology.
Atoms are the smallest fundamental
building blocks of living organisms.
Atoms comprise three sub-atomic particles:
protons, neutrons, and
elections.
Protons and neutrons are found in the
atom's nucleus. Electrons are found
orbiting around the nucleus.
Something you'll need to know later on:
protons have positive (electrical) charge,
neutrons have neutral charge (no charge),
and electrons have negative charge.