Misc: How many states (including internal territories) does Australia contain?

Questions

What was described on its launch as being "as thick as cigarette packet", reflecting its creator's idea of a perfect size?

What did Tim Berners-Lee invent while working at the CERN European nuclear research organisation?

What was Laika, the first animal in space?

Which deadly disease was declared eradicated?

What was the name of Henry VIII's warship which was recovered from the Solent?