| A | B |
| analyze | to study carefully; to find out what something is made of |
| ascertain | to find out; discover for certain |
| controversial | causing questions and arguments |
| cosmos | all of space; the universe |
| immensity | great size |
| inevitable | certain to happen; not able to be avoided |
| infinite | having no limits; endless |
| inquiry | investigation; research |
| invaluable | important beyond price |
| probe | to explore or investigate |