It would take almost 50 times as much speed as a rocket leaving Earth's gravity for a craft to exit the galaxy, according to a study of high-velocity stars. Researchers at the Leibniz Institute for Astrophysics in Potsdam, Germany, used data from the Radial Velocity Experiment to measure escape velocity of stars leaving the Milky Way, speculating that a combination of matter and antimatter could allow a craft to break away. "I know it's a crazy idea, but if you had lots of matter and lots of antimatter, you could power a spaceship out of the galaxy," said astronomer Joss Bland-Hawthorn, a member of the research team.

Full Story:
New Scientist

Related Summaries