University of Missouri–St. Louis astronomy students observe the path of the sun last week outside University Libraries on North Campus during a class led by Mohi Saki (back left), an assistant professor in the Department of Mathematics, Physics, Astronomy and Statistics. The students will gather data again later in the semester to compare the results.

This photograph was taken by UMSL photographer Derik Holtmann and is the latest to be featured in Eye on UMSL. View more UMSL photos by visiting the UMSL Flickr and Instagram accounts.