On Jan. 11, 2012, astronomers announced the discovery of a miniature solar system made up of three tiny planets - all of them smaller than Earth - in orbit around the red dwarf star KOI-961 about 130 light-years from Earth. The planets are the smallest alien worlds yet discovered and were found using NASA's Kepler space observatory. See how the small alien planets stack up to our own solar system and Jupiter in the SPACE.com infographic above.
- Gallery: Smallest Alien Planets Ever Seen
- Earth-Sized Planets Discovered Orbiting Alien Sun
- A Galaxy Full of Alien Planets (Infographic)
Editor's note: This infographic was corrected on Jan. 12, 2012 to include the correct diameter of Mars.
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Karl's association with Space.com goes back to 2000, when he was hired to produce interactive Flash graphics. From 2010 to 2016, Karl worked as an infographics specialist across all editorial properties of Purch (formerly known as TechMediaNetwork). Before joining Space.com, Karl spent 11 years at the New York headquarters of The Associated Press, creating news graphics for use around the world in newspapers and on the web. He has a degree in graphic design from Louisiana State University and now works as a freelance graphic designer in New York City.