Though other two-sun worlds have been discovered in the past, Kepler-1647b is substantially larger, roughly matching the size and composition of Jupiter. The planet has other similarities to those in our solar system as well. Its 4.4-billion-year age is about the same as Earth's, and each of its stars are around the same size as the Sun.
There's a famous scene near the beginning of Star Wars IV: A New Hope where Luke Skywalker is gazing introspectively at Tatooine's two suns setting over the horizon. Tatooine is an (albeit fictional) example of a circumbinary planet—one that orbits not one, but two stars. In June 2016, astronomers announced they had discovered the largest ever circumbinary planet. Its name? Kepler-1647b.
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Astronomers Find Largest Known Planet To Orbit Two Suns
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Key Facts In This Video
Astronomers recently discovered the largest planet known to date to orbit two stars. 00:09
It's located 3,700 light years away and is roughly the same age as Earth. 00:20
It's located within the habitable range, but because it's a gas giant, life is unlikely to be present. 00:31