NEW EX­O­PLANET IS A SE­COND VENUS

Sky at Night Magazine - - BULLETIN -

THE CLOS­EST ROCKY Earth-sized planet ever found could be sim­i­lar to Venus. GJ 1132b is just 39 lightyears away and has a sur­face tem­per­a­ture of around 230ºC – though this is too hot for liq­uid wa­ter, it does al­low for an at­mos­phere to per­sist.

The planet is no­table as most rocky worlds dis­cov­ered have sur­face tem­per­a­tures of sev­eral thou­sand de­grees Cel­sius, far too hot to main­tain an at­mos­phere. And, be­ing so close, it may even be pos­si­ble to ob­serve its weather pat­terns.

“While GJ 1132b is not in the hab­it­able zone, ev­ery new planet teaches us more about how plan­ets work in gen­eral. It is def­i­nitely not ‘an­other Earth’ but a re­ally hot new planet,” says Lisa Kal­teneg­ger of Cor­nell Univer­sity. http://www.gmto.org

GJ 1132b is also tidally locked, mean­ing that the same side of the planet faces its par­ent star

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