File:Galactic Cherry Blossom NGC 1156.jpg
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Summary
[edit]DescriptionGalactic Cherry Blossom NGC 1156.jpg |
English: The galaxy NGC 1156 resembles a delicate cherry blossom tree flowering in springtime in this Hubble Picture of the Week. The many bright "blooms" within the galaxy are in fact stellar nurseries — regions where new stars are springing to life. Energetic light emitted by newborn stars in these regions streams outwards and encounters nearby pockets of hydrogen gas, causing it to glow with a characteristic pink hue.
NGC 1156 is located in the constellation of Aries (The Ram). It is classified as a dwarf irregular galaxy, meaning that it lacks a clear spiral or rounded shape, as other galaxies have, and is on the smaller side, albeit with a relatively large central region that is more densely packed with stars. Some pockets of gas within NGC 1156 rotate in the opposite direction to the rest of the galaxy, suggesting that there has been a close encounter with another galaxy in NGC 1156's past. The gravity of this other galaxy — and the turbulent chaos of such an interaction — could have scrambled the likely more orderly rotation of material within NGC 1156, producing the odd behaviour we see today. |
Date | |
Source | https://www.spacetelescope.org/images/potw1927a/ |
Author | ESA/Hubble, NASA, R. Jansen |
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Credit/Provider | ESA/Hubble, NASA, R. Jansen |
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Source | ESA/Hubble |
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Date and time of data generation | 06:00, 8 July 2019 |
Software used | Adobe Photoshop CC 2019 (Windows) |
File change date and time | 09:29, 15 March 2019 |
Date and time of digitizing | 18:55, 31 January 2019 |
Date metadata was last modified | 10:29, 15 March 2019 |
Unique ID of original document | xmp.did:40aa6450-1975-984e-b48d-d236ee4010a3 |
Keywords | NGC 1156 |
Contact information |
Karl-Schwarzschild-Strasse 2 Garching bei München, None, D-85748 Germany |
IIM version | 4 |