Astronomers were surprised to find numerous Jupiter-Mass planets so close to their stars. According to their best theories and models, such "hot Jupiters" : must have formed further out from the star and must have "migrated inward" early on.
Astronomers are the people or scientists specifically, who study about the space and its components like the planets, sun, stars, galaxies, etc. Apart from studying they also write articles bases on their researches.
Stars are the celestial bodies present in the space. They are very large-sized bodies made up of hydrogen and helium. Stars produce large amounts of light and heat.
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