Science News: The Sun appears to break one of nature's most basic rules. Normally, moving away from a heat source should make temperatures fall. Yet the Sun does th. The Sun appears to break one of nature's most basic rules. Normally, moving away from a heat source should make temperatures fall. Yet the Sun does the opposite. Its visible surface, known as the photosphere, has a temperature of about 5,500°C, while... [4516 chars]
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