In the years since, Hubble has gathered more than 1.6 million observations and 430 terabytes of data. The telescope has revealed that supermassive black holes nestle at the heart of most large galaxies,

Webb has two decades ahead of it, but it's already captured some stunning images. Here are 35 of our favorites.

NASA is celebrating Hubble telescope's 35th year in space with top images including this picture of Mars, revealing the thin water-ice clouds. The Butterfly nebula image was shared on Hubble's 31st anniversary. It took its current shape after dying stars shed their outer layers.