NASAのインスタグラム(nasa) - 2月3日 07時15分

Big game and big shock waves on #SupernovaSunday! Supernova Remnant G266.2-1.2 was produced by the explosion of a massive star in the Milky Way galaxy. A Chandra observation of this supernova remnant reveals the presence of extremely high-energy particles produced as the shock wave from this explosion expands into interstellar space. In this image, the X-rays from Chandra (purple) have been combined with optical data from the Digitized Sky Survey (red, green, and blue). A supernova happens where there is a change in the core, or center, of a star. Having too much matter causes the star to explode, resulting in a supernova. Also, a supernova can occur at the end of a single star’s lifetime. As the star runs out of nuclear fuel, some of its mass flows into its core. Eventually, the core is so heavy that it cannot withstand its own gravitational force. The core collapses, which results in the giant explosion of a supernova. The sun is a single star, but it does not have enough mass to become a supernova.

Image credit: X-ray: NASA/CXC/Morehead State Univ/T.Pannuti et al, Optical: DSS

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