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Image of the Week – Hubble’s 21st Birthday – 28/04/2011

28 Apr 2011, 22:34 UTC
Image of the Week – Hubble’s 21st Birthday – 28/04/2011
(200 words excerpt, click title or image to see full post)

My apologies for this IOTW being a week late unavoidable commitments have delayed its publishing so on with the show. The Hubble Space Telescope has been providing astronomers and the general public with phenomenal images and data for more than two decades and to mark the world’s most famous telescope’s 21st birthday the Hubble team has released a breath taking image of the galaxy pair Arp 273 (Click on the image for a larger and higher quality version).

Arp 273 Credit: NASA, ESA and the Hubble Heritage Team (STScI/AURA)
Apr 273 is a pair of interacting spiral galaxies, the larger upper one on its own is called UGC 1810 with the smaller lower member of the pair called UGC 1813. The pair lie 340 million light years away from us in the direction of the constellation Andromeda – The Princess.
The smaller UGC 1813 is believed to have passed through the larger galaxy off to one side twisting the larger galaxy into a shape resembling the head of a flowering rose – as evidenced by the off centre ring structure in UGC 1810.
The smaller galaxy has only 20% the mass of the larger, though the interaction has ...

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