The High Court is mandated by section 71 of the Constitution, which vests in it the judicial power of the Commonwealth of Australia. The Court was constituted by, and its first members were appointed under, the Judiciary Act 1903. It now operates under sections 71 to 75 of the Constitution, the Judiciary Act, and the High Court of Australia Act 1979. It is composed of seven Justices: the Chief Justice of Australia, currently Susan Kiefel, and six other Justices. They are appointed by the Governor-General of Australia, on the advice of the federal government, and under the constitution must retire at age 70.

Answer this question based on the passage: who sits in the high court of australia? OK. Let's think. My stream of consciousness:
The important part for answering this question is: It is composed of seven Justices: the Chief Justice of Australia, currently Susan Kiefel, and six other Justices. The answer is seven Justices : the Chief Justice of Australia , currently Susan Kiefel , and six other Justices.