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Tuesday, January 31, 2017

Planetary Nebula OH 231.8+04.2

Planetary Nebula OH 231.8+04.2
Click on the image for full resolution

The Calabash Nebula, pictured here – which has the technical name OH 231.8+04.2 – is a spectacular example of the death of a low-mass star like the Sun. This image taken by the Hubble Space Telescope 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 a million kilometers an 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. The nebula is also 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 5000 light-years away in the constellation of Puppis (The Poop deck).
Image Credit: ESA/Hubble and NASA
Acknowledgement: Judy Schmidt
Image enhancement: Jean-Baptiste Faure

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