It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Since putting itself into orbit around Vesta in July, Dawn has found evidence that the object evolved more like a planet, with geologic processes that formed an inner core, most likely made of iron, and a mix of minerals on its surface. invisible soldier
Scientists don't know how Vesta survived the impacts that destroyed so many other objects in the Main Asteroid Belt, which lies between Mars and Jupiter. Vesta does bear the scars of brutal beatings, including a 290-mile diameter impact crater that left basin walls three times higher than Mount Everest.
"There were several large impacts that have tried to destruct Vesta," Reddy told Discovery News. "We don't know whether its general structure has something to do with the way it has been protected and still intact today. We're not sure if it has something to do with Vesta's location. We have a family of objects (meteorites) that actually are pieces of Vesta ... so we know that some pieces have been taken off. The question is why has it remained intact? I don't know." After a year of study at Vesta, Dawn is scheduled to move on to the largest object in the region, the dwarf planet Ceres.
Conversely I wonder what prevents Vesta from accumulating debris and growing into a full fledged planet?