A soaring quest through the Solar System's exotic and hidden water realms, from the deep seas below the icy crust of Europa to the vast prehistoric oceans that once existed on Mars billions of years ago. <br /><br />Thanks for watching. Follow for more videos. <br />#cosmosspacescience <br />#spacedeepestsecrets <br />#cosmology <br />#astronomy <br />#spacetime <br />#spacescience <br />#space <br />#nasa <br />#spacedocumentary <br />#oceans <br />#alien <br />
