| term | Description |
|---|---|
| alignment | |
| Alpha Centauri | |
| asteroid | |
| astronaut | |
| astronomer | |
| big bang theory | |
| black hole | |
| celestial | |
| cluster | |
| comet | |
| constellation | |
| cosmic ray | |
| cosmos | |
| crater | |
| dark matter | |
| deep space | |
| Doppler shift | |
| dwarf star | |
| eclipse | |
| equinox | |
| event horizon | |
| galaxy | |
| gamma ray | |
| gravitation | |
| Hubble's law | |
| Hubble Space Telescope | |
| interstellar | |
| lunar month | |
| meteorite | |
| Milky Way | |
| neutron star | |
| observatory | |
| orbit | |
| outer space | |
| planet | |
| planetoid | |
| Pole Star | |
| quasar | |
| red dwarf | |
| rocket | |
| shooting star | |
| solar flare | |
| solar system | |
| solstice | |
| space | |
| space dust | |
| space exploration | |
| star | |
| supernova | |
| telescope | |
| terrestrial | |
| universe | |
| vacuum | |
| white dwarf | |
| X-ray |