The size of the Court is not specified; the Constitution leaves it to Congress to set the number of justices. Under the Judiciary Act of 1789 Congress originally fixed the number of justices at six (one chief justice and five associate justices).
The Court's size isn't defined in detail; the Constitution allows Congress to decide on the number of justices. Under the Judiciary Act of 1789, Congress originally established a total of six justices (one chief justice and five associate justices).