din_lligwy neolithic burial chamber anglesey. this top pitted surface of the 25tonne capstone sits propped just 1.5m above a natural fissure in the limestone rock bed. In use over 1000 years it was found to contain between 15 to thirty burials of men women and children. MESSENGER (a backronym of MErcury surface, space ENvironment, GEochemistry, and Ranging, and a reference to the roman mythological messenger, mercury) was a NASA robotic spacecraft that orbited the planet mercury between 2011 and 2015. the spacecraft was launched aboard a delta II rocket in august 2004 to study mercury’s chemical composition, geology, and magnetic field. from instagram: