Christy Gordon, executive director of the Delmarva Discovery Museum in Pocomoke City, stands by the steamship Discovery exhibit. (Photo by Dave Harp/Chesapeake Bay Journal)By Jeremy Cox The Chesapeake Bay Journal Rumors of its demise had swirled for years. But this time, there was no denying it: The Delmarva Discovery Museum really was closing. With barely enough money left in its bank account to settle a few bills, the Maryland nonprofit announ…