created in 2008
/r/xkcd is the subreddit for the popular webcomic XKCD by Randall Monroe. Come to discuss the comics and other work by Randall with other fans.
The aim of /r/Physics is to build a subreddit frequented by physicists, scientists, and those with a passion for physics. Papers from physics journals (free or otherwise) are encouraged. Posts should be pertinent, meme-free, and generate a discussion about physics. Please report trolls and intentionally misleading comments.