Skip to main content

The Human Framework for Alien Life

Scientific American Space & Physics, Aug-Sep 2021

Scientific American Space & Physics, Aug-Sep 2021; U.S. Department of Defense


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


A clip from The Tonight Show with Johnny Carson in 1978 made the social media rounds in mid-July. The guest that episode—astronomer and science educator Carl Sagan—offered astute criticisms of the then recently released Star Wars film for its myopic (and whitewashed) imagining of how organisms from other galaxies might look. In this collection, reporter Leonard David examines the government report published in June that surveys our evidence for extraterrestrial life so far (see “Experts Weigh in on Pentagon UFO Report”), and two of our opinion writers contemplate some specific circumstances for alien contact.

But Sagan’s prescient observations remind me that our search for other life in the universe will always be a strictly human endeavor: how we imagine aliens might look, think or operate and how we look for them or detect their existence— all these factors are based on the human framework of perception. Such limitations will only be problematic if we ignore them and fail to somehow jump beyond the bounds of our minds.

Andrea Gawrylewski is chief newsletter editor at Scientific American. She writes the daily Today in Science newsletter and oversees all other newsletters at the magazine. In addition, she manages all special collector's editions and in the past was the editor for Scientific American Mind, Scientific American Space & Physics and Scientific American Health & Medicine. Gawrylewski got her start in journalism at the Scientist magazine, where she was a features writer and editor for "hot" research papers in the life sciences. She spent more than six years in educational publishing, editing books for higher education in biology, environmental science and nutrition. She holds a master's degree in earth science and a master's degree in journalism, both from Columbia University, home of the Pulitzer Prize.

More by Andrea Gawrylewski
SA Space & Physics Vol 4 Issue 4This article was originally published with the title “The Human Framework for Alien Life” in SA Space & Physics Vol. 4 No. 4 ()