diff --git a/🧠-Educational.md b/🧠-Educational.md
index b464ce56..8bab2765 100644
--- a/🧠-Educational.md
+++ b/🧠-Educational.md
@@ -227,7 +227,7 @@
 * 🌐 **[Awesome Music Theory](https://github.com/vpavlenko/study-music)** - Music Theory Resources
 * 🌐 **[Music Outfitters](https://musicoutfitters.com/)** - Music Services / Information
 * ↪️ **[Sheet Music / Notation](https://www.reddit.com/r/FREEMEDIAHECKYEAH/wiki/audio#wiki_.25B7_sheet_music)**
-* ⭐ **[Muted](https://muted.io/)**, [Chromatone](https://chromatone.center/), [Teoria](https://www.teoria.com/index.php), [SimplifyingTheory](https://www.simplifyingtheory.com/), [LightNote](https://www.lightnote.co/) or [Music Theory](https://www.musictheory.net/) - Music Theory
+* ⭐ **[Muted](https://muted.io/)**, **[Open Music Theory](https://viva.pressbooks.pub/openmusictheory/)**, [Chromatone](https://chromatone.center/), [Teoria](https://www.teoria.com/index.php), [SimplifyingTheory](https://www.simplifyingtheory.com/), [LightNote](https://www.lightnote.co/) or [Music Theory](https://www.musictheory.net/) - Music Theory
 * [Helio](https://helio.fm/) or [NoteHeads](https://noteheads.net/) - Music Composition Tools
 * [MusicKit](https://musickit.jull.dev/) or [Tone Generator](https://www.szynalski.com/tone-generator/) - Metronome, Tuner & Tone Generators
 * [Tuner Ninja](https://tuner.ninja/) - Instrument Tuner
@@ -473,7 +473,7 @@
 * [Space Object Comparison](https://mr21.github.io/space-object-comparison/) - Compare Sizes Of Celestial Objects
 * [Astrogeology](https://astrogeology-usgs.hub.arcgis.com/pages/map-search) - Planetary Maps 
 * [Map of the Universe](https://mapoftheuniverse.net/), [Scale of the Universe](https://scaleofuniverse.com/), [AndroidCelestia](https://github.com/celestiamobile/AndroidCelestia/) or [SpaceEngine](https://spaceengine.org/) / [Old Versions](https://forum.spaceengine.org/viewtopic.php?t=182) - Interactive Universe Scales
-* [NASA's Eyes](https://science.nasa.gov/eyes/) - 3D Space Visualizations / [Solar System](https://eyes.nasa.gov/apps/solar-system/#/home)
+* [NASA's Eyes](https://science.nasa.gov/eyes/) or [Celestia](https://celestiaproject.space/) - 3D Space Visualizations / [Solar System](https://eyes.nasa.gov/apps/solar-system/#/home)
 * [100,000 Stars](https://stars.chromeexperiments.com/) - Interactive 3D Star Visualization
 * [AndroidPlanisphere](https://github.com/tengel/AndroidPlanisphere) - Android Star Chart
 * [Aladin](https://aladin.cds.unistra.fr/) - Astronomical Image Viewer / [Lite Version](https://aladin.cds.unistra.fr/AladinLite/)
@@ -1062,4 +1062,4 @@
 * [TheDevilsDictionary](https://www.thedevilsdictionary.com/) - Cynical Dictionary
 * [WordSafety](http://wordsafety.com/) - Swear Word Indexes
 * [FreeMdict](https://freemdict.com/) - Dictionary Downloads / [Archive](https://rentry.co/FMHYBase64#freemdict-downloads)
-* [PyGlossary](https://github.com/ilius/pyglossary) - Convert Dictionary Files
+* [PyGlossary](https://github.com/ilius/pyglossary) - Convert Dictionary Files
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