Image of lab mouse looking at viewer

Mus musculus (Public Domain)

Image of concrete dam among rolling green hills

Fontana Dam, North Carolina • Library of Congress Prints and Photographs Division (Public Domain)

Image of flowers growing out of snow

Image by rafluxeloy from Pixabay

Microscopic image of E. coli bacteria

E. coli bacteria • Photo by Janice Haney Carr, National Escherichia, Shigella, Vibrio Reference Unit at CDC, USCDCP on Pixnio

Image of a radio telescope pointed toward the sky

Photo by Donald Giannatti on Unsplash

Image of man watching the setting sun

Photo by Reymark Franke on Unsplash

Image of man directing computer-controlled planetarium show

The new computer-controlled Charles Hayden Planetarium • Photo Credit Museum of Science, Boston © Michael Malyszko 2010

Image of beetle atop a ball of dung

The dung beetle at work • Photo by Andi Gentsch (CC BY-SA 2.0)

Image of two men grappling with each other

Photo by Miguel Discart (CC BY-SA 2.0)

Image of barred spiral galaxy

UGC 12158, an example of a barred spiral galaxy • ESA/Hubble