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The brightest of all the asteroids and the fourth to be discovered, in 1807. It is the third largest, with a diameter of about 530 km (329 mi), and the only asteroid that can be seen without a telescope. Evidence of lava flows on its surface suggests that it once had a molten interior. See more at asteroid.
The Roman and Greek goddess of the hearth and home. Roman and Greek cities were supposed to have a public hearth dedicated to Vesta, at which the fire was kept constantly burning.