Comet Reeks of Cat Crap and Rotten Eggs
放臭屁的彗星
The Rosetta spacecraft has unexpectedly detected hydrogen sulphide and ammonia coming from Comet Churyumov-Gerasimenko. Lee Billings reports
罗塞塔探测器意外地发现,格拉西姆彗星竟然含有硫氢化物和氨。
撰文/播音 李比•林斯(Lee Billings)
翻译 王宁
审校 李轩
What smells like rotten eggs, a used litter box and an almond-munching mortician? The answer is one of those dirty snowballs in space, a comet. Comet Churyumov-Gerasimenko, to be exact, which is starting to thaw as it closes in on the sun.
什么东西闻起来像臭鸡蛋,用过的垃圾盒和嚼杏仁的送葬者?答案就是宇宙中的一个脏雪球——彗星格拉西姆,它因接近太阳正不断融化。
Since August, the European Space Agency’s Rosetta spacecraft has been monitoring the comet. Right now, Churyumov-Gerasimenko is between the orbits of Mars and Jupiter, some 300 million miles from Earth. It’s so chilly out there that scientists expected Rosetta’s instruments to detect scarcely more than odorless carbon dioxide from the comet.
自从8月起,欧洲航天局的罗塞塔探测器就已经开始检测这颗彗星。此时此刻,格拉西姆正位于火星和木星轨道之间距地球大约3亿米的位置。那里异常得寒冷,以至于科学家认为,罗赛塔探测器可以从彗星上检测到的物质除了无味的二氧化碳再无他物。
But instead Rosetta has also detected hydrogen sulphide—with its rotten egg odor—as well as ammonia, with a smell familiar to anyone who has changed a cat pan. Also in the mix: formaldehyde and methanol, found in embalming fluid, mixed with faint traces of poisonous hydrogen cyanide, which has an almond-like aroma.
但是罗赛塔探测器确确实实探测到了有臭鸡蛋气味的硫氢化物和有猫尿气味的氨,和在尸体防腐中用到的甲醇和甲醛混合液,以及微量带有杏仁气味的有毒气体氰化氢。
Rosetta will deploy a probe to land on the comet this November, and will soon gather more pungent whiffs of the comet’s appalling perfume. But by studying this eau de comet, researchers hope to better understand the deep—and apparently smelly—chemical origins of our solar system.
罗塞塔将在11月部署一个探测器在彗星上着陆(截至翻译时,探测器已经着陆),它将收集更多彗星放出的刺激性气体。通过研究这个大雪球,研究人员希望能够更好的了解我们太阳系深远而又充满臭气的化学起源。
(题图来源:ESA/Rosetta/MPS for OSIRIS Team )