Desperate phone calls made in the dead of night rarely convey good news, much less first word of a major scientific discovery. Alex Ji made such a call in 2015 from atop a mountain in Chile, where he was using one of the world’s largest telescopes. “This was actually the first time that I had taken data on a telescope ever,” says Ji, then a graduate student at the Massachusetts Institute of Technology in Cambridge. “I was absolutely convinced that I had done something wrong.”

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新闻专题：追踪黄金的宇宙起源故事[地球、大气和行星科学]

在深夜拨打绝望的电话很少传达好消息，更不用说重大科学发现的第一句话了。2015 年，Alex Ji 在智利的一座山顶上打了这样一个电话，当时他正在使用世界上最大的望远镜之一。“这实际上是我第一次在望远镜上获取数据，”当时在剑桥麻省理工学院攻读研究生的 Ji 说。“我绝对相信我做错了什么。”