It turns out that The Motley Fool's new investing service, Supernova, has nothing to do with exploding stars. How disappointing. So to make up for their inadequacies, I wrote a piece for the Motley Fool Blog Network with a list of three stocks that you might want to have in your portfolio to hedge against the potential of a market crash following in the aftermath of a near-Earth supernova. I explain why you will want to own lead-shielding manufacturer Metalico (MEA), cancer drug maker Celgene (CELG), and the possible savior of our food chain, Archer Daniels Midland (ADM). You might not survive the bombardment of radiation and cosmic rays or the ensuing ice age, but hopefully your portfolio can weather the storm.