File:Astro-pointillism (31784535286).jpg
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[edit]DescriptionAstro-pointillism (31784535286).jpg |
On a clear evening in April of 1789, the renowned astronomer William Herschel continued his unrelenting survey of the night sky, hunting for new cosmic objects — and found cause to celebrate! Lengthening his impressive list of cosmic discoveries yet again, the astronomer spotted this bright spiral galaxy, named NGC 4707, lurking in the constellation of Canes Venatici (the Hunting Dogs). NGC 4707 lies roughly 22 million light-years from Earth. Over two centuries later, the Hubble Space Telescope is able to view the same galaxy in far greater detail than Herschel could, allowing us to appreciate the intricacies and characteristics of NGC 4707 as never before. This striking image comprises observations from Hubble’s Advanced Camera for Surveys (ACS), one of a handful of high-resolution instruments currently aboard the space telescope. Herschel himself reportedly described NGC 4707 as a “small, stellar” galaxy; while it is classified as a spiral (type Sm), its overall shape, center, and spiral arms are very loose and undefined, and its central bulge is either very small or non-existent. It instead appears as a rough sprinkling of stars and bright flashes of blue on a dark canvas, as if a pointillist painter had dotted the cosmos with small pinpricks of bright paint. The blue smudges seen across the frame highlight regions of recent or ongoing star formation, with newborn stars glowing in bright, intense shades of cyan and turquoise. |
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Source | Astro-pointillism |
Author | NASA Hubble Space Telescope |
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[edit]ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
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This image was originally posted to Flickr by NASA Hubble at https://flickr.com/photos/144614754@N02/31784535286 (archive). It was reviewed on 13 July 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
13 July 2018
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current | 15:33, 13 July 2018 | 1,041 × 706 (142 KB) | Hiàn (alt) (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Credit/Provider | ESA/Hubble & NASA |
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Source | ESA/Hubble |
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Date and time of data generation | 06:00, 19 December 2016 |
Keywords | NGC 4707 |
Contact information |
Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |
IIM version | 4 |