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  1. Hace 1 día · A simple chart for classifying the main star types using Harvard classification. In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines.

  2. Hace 11 horas · Jessica Ann Simpson (born July 10, 1980) is an American singer, actress, and businesswoman. After performing in church choirs as a child, Simpson signed with Columbia Records in 1997, aged seventeen. Her debut studio album, Sweet Kisses (1999), sold two million copies in the United States and was led by the Billboard Hot 100-top three single "I Wanna Love You Forever".