天文学家或可利用锰来测定星系的年龄

天文学家发现了一种测定宇宙时间的新方法。通过研究锰元素，研究人员能够更准确地推断星系的年龄。

Keeping track of time in the universe is a difficult task. It’s constantly evolving and changing, and studying events that happened billions of years ago, while possible, isn’t exactly easy. A recent paper in the Monthly Notices of the Royal Astronomical Society from astronomers at The Ohio State University has unlocked a whole new way to tell time in space by using a new, perhaps unexpected element - manganese.