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.
Where did the hypertext publication known as "wiki", collaboratively edited and managed by its own audience directly using a web browser, get its name?
What project started out under the name "Chip Test", and progressed through "Deep Thought" to a name which became more famous internationally in 1997. What was the name?
