قسمت 13: زمین‌شناسان به یک هتل چشمه آب گرم می‌روند و کروی‌های کیهانی را در غبار پشت‌بام کشف می‌کنند.

13

The geologists visit a classy hot-spring hotel. A white stone ring proves to be lime from the spring deposited in a pipe. Nagi speaks of career opportunities for geologists. At night they watch for shooting stars. Nagi reveals that rooftop dust may contain micrometeorites that can be harvested with a magnet. With the aid of a microscope, they find a cosmic spherule. Ruri reflects on the fun of scientific discovery and looks forward to more. (Source: Wikipedia)