The federal judiciary of the United States is one of the three co-equal branches of the federal government of the United States 
What else could you tell me about it?
Article III of the Constitution requires the establishment of a Supreme Court and permits the Congress to create other federal courts
That is definitely something I did not know.
Federal judiciary of the United States
The federal judiciary of the United States is one of the three branches of the federal government of the United States organized under the United States Constitution and laws of the federal government. Article III of the Constitution requires the establishment of a Supreme Court and permits the Congress to create other federal courts, and place limitations on their jurisdiction. Article III federal judges are appointed by the president with the consent of the Senate to serve until they resign, are impeached and convicted, retire, or die
Constitution of the United States
The Constitution of the United States is the supreme law of the United States of America. The Constitution, originally comprising seven articles, delineates the national frame of government. Its first three articles embody the doctrine of the separation of powers, whereby the federal government is divided into three branches: the legislative, consisting of the bicameral Congress (Article One); the executive, consisting of the president (Article Two); and the judicial, consisting of the Supreme Court and other federal courts (