Image of tourist recording himself with a camera and selfie stick

Photo by Max Rosero on Unsplash

Microscopic image of possible biological structures within a meteorite

Microscopic structures within Martian meteorite ALH 84001 • NASA (Public Domain)

Illustration of a swirling disk of matter in space

Artist's impression of a supermassive black hole • ESO/L. Calçada (CC BY 4.0)

Close-up image of a mosquito feeding on human blood

A mosquito of the genus Anopheles • Jim Gathany/CDC (Public Domain)

Image of multiple stacks of assorted old books

Photo by Ed Robertson on Unsplash

Artist's impression of a probe parachuting into Jupiter's atmosphere

Artist's impression of the Galileo probe entering the Jovian atmosphere • NASA/Ames Research Center/Ken Hodges (Public Domain)

Microscopic image of Propionibacterium

Propionibacterium • Image by CDC/Bobby Strong (Public Domain)

Image of nuclear explosion

The culmination of the Manhattan Project • US Department of Energy (Public Domain)

Image of the night sky awash with stars

Photo by Corey Agopian on Unsplash

Image of television with static on screen

Photo by Zach Vessels on Unsplash