
NASA @NASA
😯 Earth isn't the only place with rivers, lakes & seas. Saturn’s moon Titan has them, too — not of water, but liquid methane & ethane! This frigid world even hides a liquid water ocean deep beneath its surface. Here’s what you need to know about Titan: https://t.co/MKJJyAgLTN https://t.co/jPb7lUW68S — PolitiTweet.org