Mars The Hellas (or Hellas Planitia) is an impact crater, about 2,300 km (1,400 mi) across and 8 km (5 mi) deep. It is among the deepest craters observed in our solar system.
Until the Kingdom of Hellas (Greece), newly recognised internationally as independent in 1832, chose and established its capital in Athens which city served as the Kingdom's capital?
Where did the hypertext publication known as "wiki", collaboratively edited and managed by its own audience directly using a web browser, get its name?
