WEBVTT FILE 1 00:00:00.001 --> 00:00:10.480 Hubble witnessed plumes of water vapor on which of Jupiter’s moons? 2 00:00:10.480 --> 00:00:16.480 Europa is an ice-covered moon long suspected to  have an ocean under the ice, but Hubble detected   3 00:00:16.480 --> 00:00:24.640 actually episodic plumes of water vapor being  ejected from between cracks in the ice of Europa. 4 00:00:24.640 --> 00:00:33.440 That's very exciting, very unexpected. And  that's something that we can glean by having   5 00:00:33.440 --> 00:00:39.840 a telescope that can look at things in the  solar system over time and see changes and   6 00:00:39.840 --> 00:00:49.520 dynamics that gives us information that we  would never get by just one single snapshot. 7 00:00:49.520 --> 00:00:55.280 So because Hubble is above the Earth's  atmosphere we can actually see details on   8 00:00:55.280 --> 00:01:04.126 planets in our solar system and beyond that would  be difficult or impossible to see from the ground. 9 00:01:04.170 --> 00:01:14.000 [ BEAUTIFUL MUSIC]