The explosion of a star, called a supernova, is an immensely violent event. It usually involves a star more than eight times the mass of our sun that exhausts its nuclear fuel and undergoes a core collapse,

For the first time, astronomers have obtained visual evidence that a star met its end by detonating twice. By studying the centuries-old remains of supernova SNR 0509-67.5 with the European Southern Observatory's Very Large Telescope (ESO's VLT),

An explosion captured in a new image could help astronomers to better understand the "standard candles" at the center of a major cosmological mystery.