The Voyager 1 spacecraft has experienced three cosmic tsunami waves in interstellar space.
This kind of wave occurs as a result of a coronal mass ejection erupting from the sun.
Listen to how these waves cause surrounding ionized matter to ring like a bell.
The most recent tsunami wave that Voyager experienced began in February 2014, and may still be going. It is the longest-lasting shock wave that researchers have seen in interstellar space.
Although believed to be smooth and quiet, these shock waves travelling through interstellar medium are more common than previously thought.
Such “tsunami wave” forms after a solar coronal mass ejection, when a magnetic cloud of plasma is liberated from its surface. The resulting wave of pressure can perturb the interstellar plasma if it runs into it!