The sinking of the RMS Titanic on April 15, 1912, is the most famous maritime disaster in history. The story has been retold countless times, but experts are still uncovering new details about what happened that night more than a century later. The latest development in our understanding of the event has to do with the northern lights. As Smithsonian reports, the same solar storm that produced an aurora over the North Atlantic waters where the Titanic sank may have caused equipment malfunctions that led to its demise.

Independent Titanic researcher Mila Zinkova outlines the new theory in a study published in the journal Weather. Survivors and eyewitnesses from the night of the Titanic's sinking reported seeing the aurora borealis light up the dark sky. James Bisset, second officer of the ship that responded to the Titanic's distress calls, the RMS Carpathia, wrote in his log: "There was no moon, but the aurora borealis glimmered like moonbeams shooting up from the northern horizon."

Zinkova argues that while the lights themselves didn't lead the Titanic on a crash course with the iceberg, a solar storm that night might have. The northern lights are the product of solar particles colliding and reacting with gas molecules in Earth's atmosphere. A vivid aurora is the result of a solar storm expelling energy from the sun's surface. In addition to causing colorful lights to appear in the sky, solar storms can also interfere with magnetic equipment on Earth.

Compasses are susceptible to electromagnetic pulses from the sun. Zinkova writes that the storm would have only had to shift the ship's compass by 0.5 degrees to guide it off a safe course and toward the iceberg. Radio signals that night may have also been affected by solar activity. The ship La Provence never received the Titanic's distress call, despite its proximity. The nearby SS Mount Temple picked it up, but their response to the Titanic went unheard. Amateur radio enthusiasts were initially blamed for jamming the airwaves used by professional ships that night, but the study posits that electromagnetic waves may have played a larger role in the interference.

If a solar storm did hinder the ship's equipment that night, it was only one condition that led to the Titanic's sinking. A cocktail of factors—including the state of the sea, the design of the ship, and the warnings that were ignored—ultimately sealed the vessel's fate.

[h/t Smithsonian]