| A | B |
|---|
| astro | star |
| chron | time |
| helio | sun |
| hetero | different |
| homo | same |
| neo | new |
| paleo | old |
| syn/sym | with/together/same |
| astronomy | science of stars |
| asterisk | mark shaped like a star |
| asteriod | star that is dying |
| chronic | all the time |
| chronological | in order of time |
| synchronize | to set time together |
| heliotherapy | using sunshine to improve health issues |
| heliotrope | flowers that turn toward the sun |
| heliocentric | sun-centered |
| heterogeneous | having different nature or kinds in a group |
| homogeneous | having the same origin; the same basis |
| neon | a gas like element used in neon lights |
| neocracy | government by new inexperienced officials |
| paleontology | scientific study of prehistoric life |
| sympathy | feeling pity and sorry for someone's misfortune; feeling the same as that person |
| sympthony | many instruments playing at the same time |
| synopsis | a brief summary |
