The universe is constantly shifting. Stars burn out, moons drift, and planets change in ways we barely notice from Earth. Some of these transformations take millions of years, while others happen in the span of a few decades. Thanks to space exploration and powerful telescopes, we now have before-and-after images that reveal just how much planets can change over time.
Seeing these side-by-side comparisons makes it clear—nothing in space stays the same forever. Here are some of the most striking planetary changes ever captured.
Related: Explore the Most Bizarre Planets We've Discovered So Far
