Unification in the world by NASA

When a star like the Sun begins nears the end, it will blow off huge clouds of gas and dust. These outbursts can form spectacular structures such as in the Cat's Eye nebula. Listen to the data: A radar-like scan moves clockwise emanating from the center point to produce pitch. The rising and falling pitches are due to the radar scan passing across the shells and jets in the nebula.

Credit: NASA/CXC/SAO/K.Arcand, SYSTEM Sounds (M. Russo, A. Santaguida)