"The reported meteor entered the solar system with a speed of 60 km/s (134,216 mph) relative to the local standard of rest (obtained by averaging the motion of all stars in the vicinity of the Sun)," Loeb wrote in an email. "Such a high ejection speed can only be produced in the innermost cores of planetary systems -- interior to the orbit of the Earth around a star like the sun, but in the habitable zone of dwarf stars, hence allowing such objects to carry life from their parent planets."
In other words, according to Siraj and Loeb's calculations, something happened a long, long time ago in a star system far, far away that caused some space debris to be launched into interstellar space at a very high velocity. After traveling some unknown number of light-years at high speed, this interstellar interloper the size of a kitchen oven smacked into our atmosphere on Jan. 8, 2014.
I took them out because the paragraph breaks (I get fancy) kept bumping the word total over 300.