Porque a terra gira em torno do sol?
Autor: prof Oscar Ramos | Publicado: 2012-06-26T12:30:00-07:00

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Porque a massa do Sol é milhares de vezes maior a massa da Terra e dos outros planetas do sistema. E o Sol ao girar, cria um campo magnetico chamado gravidade, assim como todos os corpos celestes. Ao mesmo tempo que o Sol "puxa" para si ele repele, como imãs opostos. Como o Sol tem maior massa sua força gravitacional é bem maior e ele atrai todos os planetas,&nbsp;fazendo-os girar a seu redor. O Sol tambem gira em torno de um astro maior do que ele, a estrela Vega, que tem massa muitas vezes maior que a do Sol, sao como eletrons girando&nbsp;em torno de um nucleo.
Samira Vieira