The Microscopic Universe
/r/Earthmind: Earthmind - The subreddit for discover.earth, and the Carl Sagan-esque wonders of the cosmos; from ocean depths to distant galaxies. - April 20, 2019 - 01:30
/r/gifsthatkeepongiving: Gifs That Keep On Giving - This is a subreddit dedicated to those GIFs that just keep on giving. Whether they are mind expanding, funny, or just plain awesome, they are welcome here. - April 19, 2019 - 20:00
/r/Currentlytripping: Currently Tripping - Are you currently tripping? You might enjoy some of these pics, gifs, videos, music or web-tools posted to this subreddit. - April 19, 2019 - 19:37
/r/MicroNatureIsMetal: Microscopic nature being metal - Like r/natureismetal but for microscopic (or just very small) organisms - April 19, 2019 - 18:31
Winners: Nikon's Small World Photomicrography Competition, 2018
/r/microscopy: Microscopy: Microscope Stuff - In science class, you always wished you could play with the microscope a little bit longer. Now that you are an adult, you actually can. Cooler and with more bang for your buck than a telescope, microscopy lets you do real science, and lets you spend hours looking at a drop of water. Whether you just like looking around, or you're a renowned professional, join /r/microscopy today! - April 20, 2019 - 00:34