Antarctica is a landmass.
Antarctica . Anywhere from 1,000 to 5,000 people reside throughout the year at the research stations scattered across the continent . Australia , sometimes known in technical contexts by the names Sahul , Australinea or Meganesia , to distinguish it from the Australian mainland , is a continent comprising mainland Australia , Tasmania , New Guinea , Seram , possibly Timor , and neighbouring islands . A continent is one of several very large landmasses on Earth .