On a winter night in 373 or 372 BC, a catastrophic earthquake and tsunami destroyed and submerged Helike (or Helice), the principal Greek city on the southwest shore of the Gulf of Corinth. Also destroyed was the temple of the Heliconian Poseidon, the god of earthquakes and the sea. The destruction of city was foretold by several events, including the appearance of some "immense columns of flame" (Google books), which have since been classified as a type of earthquake lights. The submerged ruins of the city disappeared slowly, as centuries later tourists could still see the walls beneath the water. Silt finally covered the ruins, turning the ocean into land again. The city, once a founding member of the Achaean League, was lost and remembered only in writings. A coin from Helike was discovered in 1861, but it wasn't until 2001 that not one but two ancient cities were discovered, including an entire Early Bronze Age town, dating from about 2400 BC. [more inside]
Still clinging desperately to those reading-things of yours made from dead trees? While you're at it, scan the damn thing and make your own e-book. (My prediction is that there are copyright issues here that the manufacturer is ignoring, but that will come back to haunt them.)
Trouble started soon into Hayabusa's treacherous round-trip journey to Itokawa when she lost her companion, Minerva. On arrival, she stumbled and dropped the sample she was sent to retrieve, and we thought the worst when she stopped calling. One accident left her disoriented and unable to find her way, and another reduced her progress to a slow limp. But on Sunday, with unfailing help from home, Hayabusa returns, three years late and seven years after she departed.
Star Trek nerd alert: Standard orbit, Mr. Sulu." Captain Kirk barks out NASA announces Dawn, an ion propulsion rocket to two asteroids, Vesta and Ceres.
The World's Smallest Snowman is 10 µm across, 1/5th the width of a human hair. The snowman was made from two tin beads used to calibrate electron microscope astigmatism. The eyes and smile were milled using a focused ion beam, and the nose, which is under 1 µm wide (or 0.001 mm), is ion beam deposited platinum.