Creatively image a question and justification for this answer: Associate Justice Anthony Kennedy is the longest - serving justice , with a tenure of 7004110440000000000 ♠ 11,044 days ( 7004110440000000000
The question is: Context: A total of 113 Justices have served on the Supreme Court of the United States, the highest judicial body in the United States. Justices have life tenure, and so they serve until they die in office, resign or retire, or are impeached and removed from office (which has never happened; the one impeached Justice was acquitted). Among the current members of the Court, Associate Justice Anthony Kennedy is the longest-serving justice, with a tenure of 7004110440000000000 ♠ 11,044 days (7004110440000000000 ♠ 30 years, 86 days) as of May 15, 2018. For the 104 non-incumbent justices, the mean length of service was 6,112 days (16.7 years) with a standard deviation of 3,620 days (9.9 years). The median length of service was 5,740 days (15.7 years). Their period of service ranges from William O. Douglas's 13,358 days (7004133580000000000 ♠ 36 years, 209 days) on the Court to the 163-day tenure of Thomas Johnson.

Question: who is the longest serving justice currently on the supreme court?
Step-by-step reasoning process: The relevant information to answer the above question is: Among the current members of the Court, Associate Justice Anthony Kennedy is the longest-serving justice, with a tenure of 7004110440000000000 ♠ 11,044 days (7004110440000000000 ♠ 30 years, 86 days) as of May 15, 2018.
