Not exactly. The Constitution specifies that the justices shall hold their office "during good behavior". Effectively, however, that translates into "for life" ... as long as they don't do something that's so egregious that they get impeached for it.
Court justices are appointed for life.
Supreme
The Supreme Court sit for life. The thinking on this was they would be free of political restrictions and policies to be able to interpret law according to the constitution.
Yes.
No. The justices are appointed by the president for life, death, or until they retire. They are suppose to be objective and neutral so they can base their decisions on the interpretation of the constitution and previous cases.
Life or until retirement
US Supreme Court justices are appointed for life, or until they retire.
Life
The justice must be approved by the senate.
The entity you are referring to is the Supreme Court of the United States. It consists of one Chief Justice and eight Associate Justices, all of whom are appointed for life by the President and confirmed by the Senate. This structure allows for judicial independence and stability in interpreting the Constitution and federal law. Justices can only be removed through impeachment, making their tenure secure barring misconduct.
Supreme Court Justices are appointed for life and I think the retirement time varies much.
They are appointed for life, or until they retire.