Over 5000 alien worlds have been discovered outside our solar system

Over 5000 alien worlds have been discovered outside our solar system
To date, over 5000 exoplanets have been discovered using telescopes on the ground and in space. Credit: NASA/JPL-Caltech
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To date, over 5000 exoplanets have been discovered using telescopes on the ground and in space. Credit: NASA/JPL-Caltech