July 2014
S M T W T F S
« Jun    
 12345
6789101112
13141516171819
20212223242526
2728293031  
News for Norther Colorado and the world

Wednesday, July 30, 2014

Astronomy Picture of the Day

 

stephquintet hwilson2048 670x566 Astronomy Picture of the Day

Stephan’s Quintet
Image Data: Hubble Legacy ArchiveESANASAProcessing: Hunter Wilson

 

Explanation: The first identified compact galaxy group, Stephan’s Quintet is featured in this eye-catching image constructed with data drawn from the extensive Hubble Legacy Archive. About 300 million light-years away, only four galaxies of the group are actually locked in a cosmic dance of repeated close encounters. The odd man out is easy to spot, though. The four interacting galaxies (NGC 7319, 7318A, 7318B, and 7317) have an overall yellowish cast and tend to have distorted loops and tails, grown under the influence of disruptivegravitational tides. But the larger bluish galaxy, NGC 7320, is much closer than the others. Just 40 million light-years distant, it isn’t part of the interacting group. In fact, individual stars in the foreground galaxy can be seen in the sharp Hubble view, hinting that it is much closer than the others. Stephan’s Quintet lies within the boundaries of the high flying constellation Pegasus.

 

Visit the NASA/JPL website to view more Astronomy Pictures of the Day

Print This Post Print This Post