At the end of the second year of President Obama’s second term, will Justice Ruth Bader Ginsburg decide to retire? Or, at the end of the second year of President Romney’s first term, will Justice Antonin Scalia choose to call it a day?

Although the ages of those two justices — 79 and 76, respectively — and the looming presidential election have fueled speculation about possible retirements in the near future, most court watchers would be reluctant to put real money on either scenario. Both appear to be going strong — and remember, John Paul Stevens left the bench at age 90.