A new study suggests that it may be possible to use free-floating planets to travel to distant galaxies. Irina Romanovskaya, a Professor of Physics and Astronomy at Houston Community College, believes that extraterrestrial civilizations may already use these rogue planets as a means of travel to explore and colonize other planetary systems.

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Source: Hot Hardware – Forget Spaceships, Free-Floating Planets Could Be Our Hitchhiker’s Guide To The Galaxy