Phantom menace to dark matter theory
![The answer to the riddle of dark matter could be found in our own solar system (Image: NASA)](http://www.newscientist.com/data/images/ns/cms/mg20327164.200/mg20327164.200-2_220.jpg)
A subtle anomaly in the orbit of the planets in our solar system could prove a controversial idea that goes beyond Einstein.
Exoplanet pairs may be masquerading as singles
![The effects of two planets with fairly circular orbits can combine to have the same effect on a star as one planet with a very elongated orbit, new research suggests (Illustration: ESA)](http://www.newscientist.com/data/images/ns/cms/dn17425/dn17425-1_500_thumbnail_70_100.jpg)
More than 100 extra planets may be hiding in the existing telescope data, but spotting them could be tricky
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