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Birthday · September 21, 2018

Irregular Galaxy NGC 55

September 21, 2018

The same forces that sculpt nebulae and spin galaxies into existence were at work the day you were born.

Irregular Galaxy NGC 55

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APOD published September 21, 2018. Credit: Martin Pugh. A publication-date match, not a photo taken on your date. Independent of NASA.

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Irregular Galaxy NGC 55

Original APOD · September 21, 2018

Irregular galaxy NGC 55 is thought to be similar to the Large Magellanic Cloud (LMC). But while the LMC is about 180,000 light-years away and is a well known satellite of our own Milky Way Galaxy, NGC 55 is more like 6 million light-years distant and is a member of the Sculptor Galaxy Group. Classified as an irregular galaxy, in deep exposures the LMC itself resembles a barred disk galaxy. Spanning about 50,000 light-years, NGC 55 is seen nearly edge-on though, presenting a flattened, narrow profile in contrast with our face-on view of the LMC. Just as large star forming regions create emission nebulae in the LMC, NGC 55 is also seen to be producing new stars. This highly detailed galaxy portrait highlights a bright core crossed with dust clouds, telltale pinkish star forming regions, and young blue star clusters in NGC 55.

Image credit: Martin Pugh

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