For the first time ever, scientists spotted an object from outside our solar system

Until recently, every asteroid and comet that zipped by Earth came from within our solar system. That changed when scientists spotted an object with a trajectory not tied to our Sun. Based on limited observations, astronomers now believe this is the first visitor of its kind to be observed. The direction of its approach suggests the comet — later determined to be an asteroid — came from Vega, one of the closest (and most famous) stars beyond our Sun. The preliminary findings were...

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