The Tenth Doctor knew of and used the human-designed Harvard spectral classification. Accidentally arriving on the planet Sunday, the Doctor wondered why Arkon (his intended destination) had an orange star, instead of a hot, white class F star. This led him to believe that either the Arkonides had experimented with stellar manipulation, or that he was on the wrong planet. (PROSE: Wetworld)
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| - The Tenth Doctor knew of and used the human-designed Harvard spectral classification. Accidentally arriving on the planet Sunday, the Doctor wondered why Arkon (his intended destination) had an orange star, instead of a hot, white class F star. This led him to believe that either the Arkonides had experimented with stellar manipulation, or that he was on the wrong planet. (PROSE: Wetworld)
- Spectral (or stellar) classification is the process by which scientists define the size, composition and emissions of a star or other astronomical object. The system begins with a series of letters followed by single digits that determines the star's heat and output. Additional symbols and abbreviations are added to further qualify special types of stars and other observable stellar phenomena associated with the body. This systems also covers size estimate for stars in the main sequence of their lives, as the relation between size and output are different in stars that go through a giant star phase, such as a red giant
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| abstract
| - The Tenth Doctor knew of and used the human-designed Harvard spectral classification. Accidentally arriving on the planet Sunday, the Doctor wondered why Arkon (his intended destination) had an orange star, instead of a hot, white class F star. This led him to believe that either the Arkonides had experimented with stellar manipulation, or that he was on the wrong planet. (PROSE: Wetworld)
- Spectral (or stellar) classification is the process by which scientists define the size, composition and emissions of a star or other astronomical object. The system begins with a series of letters followed by single digits that determines the star's heat and output. Additional symbols and abbreviations are added to further qualify special types of stars and other observable stellar phenomena associated with the body. This systems also covers size estimate for stars in the main sequence of their lives, as the relation between size and output are different in stars that go through a giant star phase, such as a red giant
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