Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Recent photographs by the spacecraft Mars Global Surveyor , currently in orbit around Mars , show features unusual for Mars yet similar to a dried pond on Earth . Previously, much evidence suggested the effects of ancient channels of flowing water on Mars, but less evidence had been found for dried pools of water . As it is also possible the features were formed by other mechanisms including flowing lava , future observations and analysis will be needed to say for sure.
Specific rights apply .