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A Ring Galaxy

From Astronomy Picture of the Day for 27/11/19.

This is Hoag’s Object, in a newly reprocessed picture from the Hubble Space Telescope. How this unusual structure formed is something of a mystery. Remarkably within the dark part of the ring you can see another ring galaxy:-

Hoag's Object

Pinwheel in Space

From Astronomy Picture of the Day for 6/11/19.

The Pinwheel Galaxy

The Pinwheel Galaxy is more properly designated M101.

Here it is seen in an amalgamation of colour-coded photos taken in X-ray (purple,) ultra-violet (blue,) visible light (yellow) and infra-red (red) from the Chandra X-ray Observatory, the Galaxy Evolution Explorer, the Hubble Space Telescope and the Spitzer Space Telescope respectively.

Given it looks like a spinning Catherine wheel firework they should have posted this a day earlier.

Then again, they’re USian, they probably wouldn’t know the significance of the 5 November in the UK.

Cartwheel Galaxy

Another stunning picture from the Hubble Space Telescope via Astronomy Picture of the Day, 18/12/2016.

Cartwheel Galaxy

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