Projetos do DR7
 Básicos
     - Caça Tesouro
     - O Universo
     - Asteróides
     - Tipos de Estrelas
     - Cor
     - Galáxias
 Avançados
 Desafios
 Para Crianças
 Jogos e Competições
 Links para Outros
Color
 SDSS Stars
 Definition
 What is Color?
 Light from Stars
 Temperature
 Observed Spectra
 Diagrams
 Thermal Sources
 Conclusion
 Your Results

Color

Look up on a clear night, far away from city lights, and you will see thousands of stars. If you look closer, you might notice that the stars shine with an amazing variety of colors. Some glow dull red, some blue, some yellow like the sun, and some bright white. The picture to the right shows three stars as seen by the SDSS.

But what exactly is color? Why do stars have different colors? And what can you learn by studying the colors of stars, galaxies, and other objects?

Click Next to find out.