Task: Text Simplification
Input (English): a dark albedo feature about across has been named olbers in honour of vesta 's discoverer , but it does not appear in elevation maps as a fresh crater would , and its nature is presently unknown , perhaps an old basaltic surface.
Output (English): when vesta found the crater it looked like it had a dark shadow over it and called it olber , biut it does not look like this detail in elevation maps like a new crater would look like , probably because of having a basaltic rock covering.