Vayujeet Gokhale | St. Louis Public Radio

Vayujeet Gokhale

A NASA satellite image of light pollution in North America in 2016.
Joshua Stevens | NASA Earth Observatory

When students and faculty at Truman State University come back for the fall semester, they might notice more stars in the sky. 

After four years of research on how artificial light brightens the night sky, scientists are planning to change lighting on campus to direct light away from the sky. That could limit light pollution, which prevents people from seeing stars and galaxies, and also can disrupt sleep patterns.