According to Dr Bally, unless planetary systems form very quickly after a star is born, they are bound to be rare occurring around only about 5% of stars.

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The borg is a character in the television show Star Trek: The Next Generation, an alien life form that is part human and part machine.

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Acting alone, gravity would cause stars to collapse completely, but as long as energy is produced at their centers by nuclear fusion (the joining of atomic nuclei to form new elements, as in a hydrogen bomb), the star is heated and puffed up.

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Blake was in superb form against the 22-year-old Querrey, who is a rising star in the ranks.

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