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
Starts With A Bang!
8 min readOct 20, 2017

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“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 understanding of the universe but also to major improvements in technology and public health and welfare.” -National Academy of Sciences

Ever since humanity first broke the bonds of gravity and slipped up above our planet’s atmosphere, we’ve been able to view the Universe like never before. No longer restricted to our location here on Earth, and no longer doomed to fight with the interference from the miles and miles of atmosphere above us, we’ve finally discovered cosmic truths that have eluded us for the whole of human history. Thanks to advances in spaceflight, and the ingenuity and investment of NASA, our scientific growth has come right alongside some of the most spectacular and illuminating images ever returned to Earth. In five separate arenas, here are five images from NASA that changed how we view the world.

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Ethan Siegel
Starts With A Bang!

The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.