original: 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.
simplifications: A dark albedo was named Olbers for Vesta's discoverer, but it does not appear in maps and its nature is presently unknown. A feature about across was named "Olbers" in honour of Vesta's discoverer. But it doesn't show up in elevation maps, as a crater would and its nature is unknown. Maybe an old surface. A dark albedo feature was named Olbers. It is in honour of Vesta's discoverer. The crater doesn't show on elevation maps. Its nature is presently unknown. Some suggest it was an old basaltic surface. A dark albedo feature has been named Olbers in honour of Vesta's discoverer. However, it does not appear in elevation maps as a fresh crater would. Its nature is unknown, possibly an old basaltic surface. A dark albedo feature about across is named Olbers in honour of Vesta's discoverer. It is not in elevation maps as a fresh crater would be. Its nature is presently unknown, perhaps an old basaltic surface. A dark feature has been named Olbers. This name is in honour of Vesta's discoverer. It does not appear in elevation maps as a fresh crater would, and its nature is presently unknown. There is a large crater named Vesta that was discovered by Olbers.  There is a dark crater on this asteroid named after Olbers, that is likely made of basalt. Vesta discovered Olbers (named in his honor) which is a dark albedo on craters. It is thought of as an old basaltic surface and does not appear in elevation maps like fresh craters. It's nature is presently unknown. A dark reflection trait has been named "Olbers" in honor of Vesta's finding, but it doesn't show in maps as a new crater would, and its kind is not known, maybe an old basaltic surface. The dark electromagnetic radiation feature has been named Olbers in honour of Vesta's discoverer. A fresh crater would show in elevation maps but this crater does not, so it's origin is unknown.