Image description: This artist’s concept depicts an itsy bitsy planetary system — so compact, in fact, that it’s more like Jupiter and its moons than a star and its planets. Astronomers using data from NASA’s Kepler mission and ground-based telescopes recently confirmed that the system, called KOI-961, hosts the three smallest exoplanets known so far to orbit a star other than our sun. An exoplanet is a planet that resides outside of our solar system. Learn more about these exoplanets.
Image from NASA/JPL-Caltech
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