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系外行星大气中首次发现潜在生物标志物
英国剑桥大学的天文学家团队借助詹姆斯·韦布空间望远镜,对一颗位于宜居带的系外行星K2-18b进行了观测,并在其大气中检测到了二甲硫醚和二甲基二硫醚的化学特征。这两种物质在地球上仅由生物过程产生,因此这一发现可能具有重大意义。
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