Properties
Position & Identifiers
1 Physical Properties
2
How to observe the Sun
Never look at the Sun without proper protection.
Direct viewing through any unfiltered telescope, binoculars, or camera viewfinder will cause permanent retinal damage in seconds. Always mount a certified solar filter on the front of the optic — eyepiece filters are unsafe. Approved methods: ISO 12312-2 eclipse glasses (naked eye only), full-aperture white-light filter (e.g. Baader film), Herschel wedge for refractors, or a dedicated H-alpha telescope.
3
Size Comparison
4
Compare Stars
5
Spectral Classification
6
Hertzsprung-Russell Diagram
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Stellar Lifecycle
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Blackbody Spectrum
9
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
10
Stellar Fusion
Community Photos (2)
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