Astronaut Jeffrey Hoffman removes Wide Field and Planetary Camera 1 (WFPC 1) during change-out operations. This was taken during the first Hubble servicing mission, which led to some of the greatest images humanity has ever taken, from both a scientific and an aesthetic perspective. Image credit: NASA.

5 NASA photos that changed the world

From the most beautiful to the most impactful, some of these are so powerful it’s breathtaking.

Ethan Siegel
Oct 20, 2017 · 8 min read

“Truth in science, however, is never final, and what is accepted as a fact today may be modified or even discarded tomorrow. Science has been greatly successful at explaining natural processes, and this has led not only to increased…