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| DR6 Projects | ||
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| Basic | ||
| - Scavenger Hunt | ||
| - The Universe | ||
| - Asteroids | ||
| - Types of Stars | ||
| - Color | ||
| - Galaxies | ||
| Advanced | ||
| Research Challenges | ||
| For Kids | ||
| User Activities | ||
| Games and Contests | ||
| Links to Others | ||
| Types of Stars | ||
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| Spectra of Stars | ||
| Exploring Spectra | ||
| Atomic Absorption | ||
| Absorption Lines | ||
| Line Strength | ||
| Temperature | ||
| The Connection | ||
| Understanding Stars | ||
| Follow Up Projects | ||
| Evaluation | ||
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