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The mysterious bright spots on Ceres

Ceres with its two unexplained bright spots

Ceres, is it a small planet or a big asteroid? As the DAWN spacecraft sends back pictures of Ceres this heavenly body seems to hold more mysteries then expected. Scientists are still not able to explain two bright spots on its surface which have never been seen before in any other object in space observed by humans. Astrobiologist at ANU's Planetary Science Institute Aditya Chopra tells us more.