The Massachusetts Bay Transportation Authority announced that a ceiling panel weighing up to 25 pounds fell at the Harvard Station in Cambridge narrowly missing a passenger. The incident, which was caught on surveillance video, occurred at around 4 p.m. on Wednesday, sending dust into the air. The aluminum panel fell around 10 feet from the ceiling but did not cause harm. The MBTA removed about 10 other panels at the station to investigate the cause of the corrosion of the wet panel that fell. The panels do not affect the structural integrity of the station. The agency is also inspecting other stations in the system with drop ceilings.