NASAのインスタグラム(nasa) - 2月4日 00時48分

It's known as the Rotten Egg Nebula because it contains a lot of sulphur, an element that, when combined with other elements, smells like a rotten egg - but luckily, it resides over 5,000 light-years away in the constellation of Puppis.

This nebular is a spectacular example of the death of a low-mass star like the sun. Spotted by the Hubble Space Telescope, the image shows the star going through a rapid transformation from a red giant to a planetary nebula, during which it blows its outer layers of gas and dust out into the surrounding space. The recently ejected material is spat out in opposite directions with immense speed - the gas shown in yellow is moving close to one million kilometers per hour (621,371 miles per hour). Astronomers rarely capture a star in this phase of its evolution because it occurs within the blink of an eye - in astronomical terms. Over the next thousand years the nebula is expected to evolve into a fully-fledged planetary nebula.

Image credit: ESA/Hubble & NASA, Acknowledgement: Judy Schmidt

#nasa #hubble #hst #nasabeyond #space #nebula #astronomy #science

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