Black & white photograph of scientist Carl Sagan, leaning his head on his hand, smiling. The name is therefore quite self-explanatory. The emote was added during the 2017 Twitch Science Week along several others, though only this one was global.
Twitch blogpost: https://blog.twitch.tv/en/2017/04/21/science-week-is-coming-and-it-starts-with-cosmos-b501136f977a/ @Twitch tweet about the emotes: https://twitter.com/Twitch/status/856631574342885376
Twitch - Global Added Apr 20, 2017 supinic.com
