Surface of a Comet Reveals First Cave Discovery

We discovered a cave on a comet for the first time. Caverns identified in comet Churyumov-Gerasimenko, also known as Comet 67P, are filled with ice, which could help explain the mysterious jets astronomers saw coming from the comet.

Although we know roughly what kind of material comets are made of (generally rock, ice, and frozen gas), we don’t know much about their internal structure. Caves could be an easy access point for scientists to learn about this interior, but unlike many planets and celestial bodies…