'最强的标志:科学家发现遥远的星球可能正在“充满活力”

“诱人”的新研究暗示了一个在120光年的世界中的生活。

来源:HuffingtonPost _科学
与我们自己的太阳系中的任何星球不同,一个遥远的世界可能会随着生活而“充满”。剑桥大学Nikku Madhusudhan在一份视频公告中说:“我们发现了迄今为止可能在系外行星上生物学活动的最有力的证据。” Madhusudhan and his team used data from the James Webb Space Telescope to find chemical signatures they believe suggest life on K2-18b.That’s a planet about two and a half times the size of Earth, and 8.6 times more massive, that sits in the habitable “Goldilocks Zone” of a dwarf star about 120 light-years away.They looked specifically for something called DMS, or dimethyl sulfide, a chemical that on Earth is仅由藻类等活生物体生产的。它是由生命所产生的独特所产生的,以至于科学家对检查其他行星的“生物签名”进行了理论化,这可能是在我们自己星球之外找到生命的关键。 And that’s what they’ve found, as well as another potential marker of life called DMDS, and in levels thousands of times higher than what’s seen on Earth, according to research published in The Astrophysical Journal Letters.“Given everything we know about this planet, a Hycean world with an ocean that is teeming with life is the scenario that best fits the data we have,” Madhusudhan said in a press release from Cambridge.But he also called for caution, saying需要更多的研究。他在视频发布中说:“我们应该保持开放的态度并获得更多的观察,以便我们重复此信号。这是科学的标志,可重复性和鲁棒性的提高,直到我们真正感到非常满意,直到我们得到真正的满意为止。” “我们还不在那里。”基于科学证据的插图,表明外部K2-18B看起来像.nasa,ESA,CSA,Joseph Olmsted(STSCI)Madhusudhan说,虽然DMS和DMD被认为是生活的标志,但总会有可能存在像K2-18B这样的世界上存在Proc