by 
badkid
ANSWERS: 9
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nope.
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No. Stars are larger than Earth and thus have stronger gravitational fields so really if such thing was possible it would be Earth falling on a star as opposed to the other way round. Generally the gravitational field of stars (the Sun in our case) keep planets in an eliptical orbit around them rather than pulling them towards the star. It's only when a star begins to 'die' and eventually becomes a black hole (this only happens to large stars and is unlikely to occur with the Sun) that it may have a gravitational force that pulls planets inwards in this manner.
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A piece of stellar debris from a supernova explosion or from an exploding neutron star can travel through space and impact a planet with devastating consequences. A planet can also be pulled into a star if knocked out of orbit by another impactor, or if the star expands to swallow up the planet. The last is the most likely of the scenarios in my answer.
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A whole star? No, Our sun is a star and a little one at that. Stars are HUGE!
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No.
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Solar systems do colide, as do entire galaxies, so theoretically YES ... but if one did, the Earth would be destroyed because even a small star is much, much, much bigger than the Earth. And if one did, it would wipe out the entire solar system, not just the Earth.
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The possibility is so unlikely that it's just of interest for the physics involved. If a dwarf star (mass of the Sun, size of the earth) was coming straight in our direction, we and the star would both move toward each other at a steadily increasing speed. If it was the slightest bit off a straight course, by the time it was big enough to show a disk in a good pair of binoculars we would have unbelievable storms and earthquakes, incredible tsunamis, and the earth itself would rip apart from the tidal effects of the far side of earth moving faster (in its orbit) than the near side.
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One called Wormwood will, someday.
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I wouldn't say the star is falling on Earth. More like Earth is being pulled into the star. Besides, the planet would probably be vaporized before it even got close to the star.
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