File:Four globular clusters ESA393147.jpg

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English: Four globular clusters, as viewed by ESA’s Gaia satellite using information from the mission’s second data release. Globular clusters are ancient systems of stars, thought to date to the very origin of our Milky Way galaxy. As such, they are ‘fossils’ from the early stages of construction of our galactic home. 

The globular clusters in this mosaic are known as NGC 5904 (top left), NGC 6656 (top right), NGC 6779 (bottom left) and NGC 6838 (bottom right).They orbit the centre of the Galaxy and are often found in the Galactic halo, far away from the disc of our Milky Way, where our Sun resides. Using data from Gaia’s second release, astronomers have measured the motion of 75 globular clusters in the halo of the Milky Way. These views are not photographs but were compiled by mapping the total amount of radiation, or flux, detected by Gaia in each pixel. Each image combines flux information taken through different filters on the spacecraft to generate colour information.

Acknowledgement: Gaia Data Processing and Analysis Consortium (DPAC); A. Moitinho / A. F. Silva / M. Barros / C. Barata, University of Lisbon, Portugal; H. Savietto, Fork Research, Portugal; A. Helmi, Kapteyn Astronomical Institute, University of Groningen, The Netherlands; F. van Leeuwen, University of Cambridge, UK; P. Mc Millan, Lund Observatory, Sweden
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Source http://www.esa.int/spaceinimages/Images/2018/04/Four_globular_clusters
Author ESA/Gaia/DPAC, CC BY-SA 3.0 IGO
Title
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Four globular clusters
Mission
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Gaia
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Space Science

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This media was created by the European Space Agency (ESA).
Where expressly so stated, images or videos are covered by the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence, ESA being an Intergovernmental Organisation (IGO), as defined by the CC BY-SA 3.0 IGO licence. The user is allowed under the terms and conditions of the CC BY-SA 3.0 IGO license to Reproduce, Distribute and Publicly Perform the ESA images and videos released under CC BY-SA 3.0 IGO licence and the Adaptations thereof, without further explicit permission being necessary, for as long as the user complies with the conditions and restrictions set forth in the CC BY-SA 3.0 IGO licence, these including that:
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This file is licensed under the Creative Commons Attribution-ShareAlike 3.0 IGO license.
Attribution: ESA/Gaia/DPAC, CC BY-SA IGO 3.0
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Date/TimeThumbnailDimensionsUserComment
current13:59, 3 April 2019Thumbnail for version as of 13:59, 3 April 20194,167 × 4,167 (8.62 MB)Fæ (talk | contribs)European Space Agency, Id 393147, http://www.esa.int/spaceinimages/Images/2018/04/Four_globular_clusters, User:Fæ/Project_list/ESA

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