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Huang Junhui
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D.2 Stellar Characteristics and Stellar Evolution
Stellar spectra (Absorbtion) The stellar spectra can be used to identify: Surface temperature ...
D.1 Stellar Quantities
Light year (Ly) & Astronimical unit (AU) A Light year is the distance travelled by light in one...
D.3 Cosmology
The expanding universe Redshift The wavelength of the light measured upon arrival is longer than ...
The Berlin Crisis
“The Berlin Crisis was ultimately caused by the failure of Khrushchev’s failed foreign policy.” T...
Social Justice
“The most powerful of authoritarians built their success on an association with social justice.” ...
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