http://www.newsweek.com/nasa-send-yeast-space-paving-way-long-term-presence-moon-1737042

As NASA prepares to launch its historic unmanned Artemis I on Monday for a voyage around the moon, people are learning what instead of who is onboard. That includes thousands of yeast samples.

Artemis I is the first in a series of "increasingly complex missions" to attempt to build long-term human presence on the moon for decades, according to NASA. One of the experiments aboard Artemis I is to see how yeast reacts to cosmic radiation.