Natural Intergalactic Travel
Theorized in 1988, and observed in 2005, there are stars moving faster than the escape velocity of the Milky Way, and are traveling out into intergalactic space. A theory for their existence is that the supermassive black hole at the center of the Milky Way ejects stars from the galaxy at a rate of about one every hundred thousand years. By 2010, sixteen hypervelocity stars had been observed. Intergalactic dust is also thought to be ejected from galaxies, and has been observed in intergalactic space.
Read more about this topic: Intergalactic Travel
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