Our galaxy – which is around 100,000 light years wide, is thought to have 40 billion planets with potential for life.
The figure is an estimate drawn up from our current knowledge 1049 planets orbiting around other stars, with over 2000 more candidates currently awaiting follow-up observations.
Of those 1049, we know of a dozen that have planet around other stars with any possibility to support life as we know it.
This infographic by U.S. web comic Randall Munroe shows just over 2,000 potentially planets habitable planets that scientists estimate could be within 60 light years from Earth.