The discovery that liquid water may have flowed very recently on Mars-- and might even be flowing today--greatly increases the odds that lifemight be found on the red planet, scientists said on Thursday. Researhers looking at images taken from an orbiting Nasa spacecraft said they had found gullies and landslides that look very much like gullies and landslides formed by flowing water on earth, which in turn suggests that liquid water will be found close under the frozen surface of the planet Mars.