File:NGC6717 - HST - Potw2136a.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:38, 7 September 2021		3,817 × 2,930 (3.56 MB)	commons>Fabian RRRR	== {{int:filedesc}} == {{Information \|description={{en\|1='''A Glittering Globular Cluster A Glittering Globular Cluster This star-studded image from the NASA/ESA Hubble Space Telescope depicts NGC 6717, which lies more than 20 000 light-years from Earth in the constellation Sagittarius. NGC 6717 is a globular cluster, a roughly spherical collection of stars tightly bound together by gravity. Globular clusters contain more stars in their centres than their outer fringes, as this image aptly d...

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Source	ESA/Hubble
Credit/Provider	ESA/Hubble and NASA, A. Sarajedini
Short title	A Glittering Globular Cluster
Image title	This star-studded image from the NASA/ESA Hubble Space Telescope depicts NGC 6717, which lies more than 20 000 light-years from Earth in the constellation Sagittarius. NGC 6717 is a globular cluster, a roughly spherical collection of stars tightly bound together by gravity. Globular clusters contain more stars in their centres than their outer fringes, as this image aptly demonstrates; the sparsely populated edges of NGC 6717 are in stark contrast to the sparkling collection of stars at its centre. The centre of the image also contains some interlopers from closer to home. Bright foreground stars close to Earth are surrounded by criss-cross diffraction spikes formed by starlight interacting with the structures supporting Hubble’s secondary mirror. The area of the night sky which contains the constellation Sagittarius also contains the centre of the Milky Way, which is filled with light-absorbing gas and dust. This absorption of light — which astronomers refer to as extinction — makes studying globular clusters nearthe Galactic centre a challenging endeavour. To determine the properties of NGC 6717, astronomers relied on a combination of Hubble’s Wide Field Camera 3 and the Advanced Camera for Surveys. Links Video of A Glittering Globular Cluster
Usage terms	Creative Commons Attribution 4.0 International License
Date and time of data generation	06:00, 6 September 2021
Software used	Adobe Photoshop 22.4 (Windows)
File change date and time	20:37, 26 August 2021
Date and time of digitizing	13:14, 21 July 2021
Date metadata was last modified	22:37, 26 August 2021
Unique ID of original document	xmp.did:04068a61-2231-7245-b361-db6aed0ee69f
Keywords	NGC 6717
Contact information	https://esahubble.org ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States
IIM version	4

File:NGC6717 - HST - Potw2136a.jpg

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