We’re doing this week’s Ad Astra post early because the European Space Agency is sending down the Rosetta mission’s Philae lander on Wednesday, November
People have been using clay since the Stone Age, but what exactly is it? Why does clay make such good ceramics? What is clay?
Georgius Agricola…the name conjures up images of togas, but not at a modern party. Actually he wasn’t Roman. This German by the name of
Update: I have followed this at my other blog with posts on predicting eruptions and on the published paper by the Kobe University volcanologists.
More information: What is amber? Emporia State University A Brief History of the Amber Room. Smithsonian The Amber Room. Tsarskoye Selo State
Don’t take their word for it – here is more on black holes from the HubbleSite and Keele University. NASA discusses this, too,