NASAのインスタグラム(nasagoddard) - 12月1日 06時27分

This dark, tangled web is a supernova remnant, created after a massive star ended its life in a cataclysmic explosion. This created the messy formation we see in this @NASAHubble image, with threads of red snaking amidst dark, turbulent clouds.

SNR 0454-67.2 is situated in the Large Magellanic Cloud, a dwarf galaxy that lies close to the Milky Way. The remnant is likely the result of a Type Ia supernova explosion; this category of supernovae is formed from the death of a white dwarf star that grows by siphoning material from a stellar companion until it reaches a critical mass and then explodes.

As they always form via a specific mechanism — when the white dwarf hits a particular mass — these explosions always have a well-known luminosity, and are thus used as markers (standard candles) for scientists to obtain and measure distances throughout the universe.

Image credit: European Space Agency (ESA)

#space #telescope #astronomy #hubble #supernova

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