Question

order the events in the matter era from first to last stellar galactic atomic

Explanation:

In the matter era, the order of events is based on cosmic evolution. First, the Atomic stage occurs (formation of atoms from subatomic particles). Then, the Galactic stage (formation of galaxies as matter aggregates). Finally, the Stellar stage (formation of stars within galaxies). So the order from first to last is Atomic, Galactic, Stellar.

Answer:

1. Atomic
2. Galactic
3. Stellar