Astronomers discovered two giant planets that are lighter than cotton candy. These “super-puffs” are the size of Jupiter, but Jupiter is as much as 35 times denser than these two lightweights.The featherweight pair orbits a star 1,110 light-years away. They are the biggest exoplanets found with less density than cotton candy.Georgina “George” Dransfield from the University of Oxford called them the lightest known planets of their size. “These two planets have densities comparable to a nice blob of shaving foam, fresh from the can,” she said.NASA’s TESS satellite detected these puffy worlds over the past decade. They orbit a star in the southern constellation Volans. Researchers used Earth telescopes to study the planets’ orbits and determine their density.Super-puffs remain rare in the cosmos. Scientists think they form around the disk of gas and dust surrounding a newborn star where there is more gas than dust....

　 　天文學家發現了兩個比棉花糖還輕的巨型行星，這兩個「超蓬鬆行星」如木星般大小，而木星密度是這兩個輕行星密度的35倍。　這對輕如鴻毛的行星環繞著一個距離地球1,110 光年的恆星運行。它們是目前發現最大，且密度比棉花糖還低的系外行星。　牛津大學的喬治娜（喬治）．德蘭斯菲爾德稱它們是已知大小同等的行星中「最輕」的。「這兩個行星的密度就和剛從罐子壓出的一團漂亮的刮鬍泡沫相當。」她說。　過去十年間，NASA 的TESS 衛星探測到這兩個蓬鬆的小行星。它們環繞著南天星座「飛魚座」的一個恆星運行。研究人員利用地球上的望遠鏡，觀測這兩個行星的軌道，而確定它們的密度。　超級蓬鬆行星在宇宙中極為罕見，科學家認為，它們形成於新生恆星周圍的氣體塵埃盤中，那裡的氣體含量遠高於塵埃含量。...