First Global Map Outside the Solar System 19
First time accepted submitter Kreuzfeld writes "For many years, astronomers have suspected that brown dwarfs — 'failed stars' with masses between those of planets and stars — have cloudy atmospheres. Our recent paper in Nature presents the first global, 2D map of the patchy clouds in the atmosphere of a brown dwarf: our neighbor, the 6.5 light-years-distant Luhman 16B. Eventually, astronomers will use this technique to make weather movies of global cloud patterns on brown dwarfs and extrasolar planets."
Re:curious orientation (Score:5, Informative)
Good question! Atmospheric scientists aren't actually sure yet whether brown dwarfs should have "bands" like we see on Jupiter and other Solar system gas giants (this was discussed at a meeting in Washington, D.C. Jan 2014) -- and our mapping data wasn't quite sensitive enough to definitively answer that question. (We're less sensitive to axisymmetric features than we are to longitudinal variations). The vertical "stretching" of the map's features toward the poles is an unavoidable artifact of our analysis technique [wikipedia.org]. Cloud patterns may be less elongated than they appear!