00:00Imagine standing on Europa, Jupiter's icy moon.
00:03Beneath your feet, a frozen ocean hides twice as much water as all of Earth's oceans combined.
00:09Above you, Jupiter hangs in the sky, 11 times wider than our moon.
00:14The ice cracks and groans under you.
00:17The sun is just a bright star here, and it is minus 160 degrees.
00:22Would you dare to walk on an alien ocean?
00:25Follow for a new space fact every day.