Three tiny beads of glass reveal that the Moon was volcanically active much more recently than geologists thought.

Amid samples of Moon dust from China’s Chang’e-5 lander, a team of geologists recently found volcanic glass that formed in an eruption about 120 million years ago — long after the last known volcanic eruptions on the Moon. The finding suggests that the Moon’s recent history is a lot more complicated, and a lot more eventful, than we realized.

Geologist Bi-Ben Wang of the Chinese Academy of Sciences, with several colleagues, published their work in the journal Science.

After almost a decade, Stranger Things is finally coming to an end. The Netflix original series cemented the streamer as a major streaming player, but in recent years it’s faced criticism for its sluggish production schedule. The series launched eight years ago but only has four seasons to show for it, and with the fifth and final season not slated for release until next year, the cast who started production as tweens will be well into their twenties.

But while all the media focus has been on the inevitable march of time, Stranger Things creators and showrunners, the Duffer Brothers, will need a new project after finally moving on from the supernatural events of smalltown Hawkins. Just where will they move to next? The answer is surprisingly obvious, and kind of hilarious.