Astro*Dictionary by Michael Erlewine
I
- Illumination, Period of 2 articles
- Impedition 1 article
- Increasing in Light 2 articles
- Index of Refraction 1 article
- Inferior / Conjunction / Planet 5 articles
- Ingress 1 article
- Intercepted / Planet / Sign 3 articles
- Interlunar 2 articles
- International / Atomic Time / Date Line 3 articles
- Interplanetary Synodic Period 1 article
- Interpretation 2 articles
- Interstellar / Extinction / Gas and Dust 2 articles
- Invariable Plane 2 articles
- Ionization 1 article
Astro*Index Copyright © 1997 Michael Erlewine
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