The discovery of a super-Jupiter exoplanet around the M-type dwarf star 2MASS J04372171+2651014 challenges models of planet formation by either core accretion (which requires time) or disk instability (which requires mass). This image from the Subaru Telescope shows the young super-Jupiter 2M0437b, which lies about 100 times the Earth-Sun distance from its parent star; the much-brighter star has been mostly removed, and the four ‘spikes’ are artifacts...
