Does liquid water flow in places on Mars?
Sara ANSWER: Hi Sara, This is a very interesting question to answer right now because the MOC (Mars Orbiter Camera) on the Mars Global Surveyor spacecraft has discovered some evidence that there might be some water on the surface of Mars. Before the images from MOC, we didn’t think that there was any water on the surface, even though there is lots of evidence for water flowing on the surface in the past. Big channels and little channels have pointed to the presence of water, but what we’ve found in the MOC images are little gullies with dark areas in them. They look like water might be seeping out of the rock near the rims of craters and flowing a short distance on the surface before freezing or evaporating.
