💧🌏 Greg Cocks: "Last Starlight For Ground-Brea…" - TechHub

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Greg Cocks @GregCocks@techhub.social

Last Starlight For Ground-Breaking [Spacecraft] Gaia – Mapping The Galaxy
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https://www.esa.int/Science_Exploration/Space_Science/Gaia/Last_starlight_for_ground-breaking_Gaia <-- shared ESA technical article/overview
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https://www.esa.int/Science_Exploration/Space_Science/Gaia <-- shared ESA Gaia home page
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#GIS #spatial #mapping #galaxy #model #modeling #extraterrestrial #ESA #Gaia #spacecraft #remotesensing #MilkyWay #scanning #survey #spatialanalysis #imagery #research #opendata
@europeanspaceagency

artist rendition - Gaia spacecraft and the 'Seven Pillars'

An infographic with the new artist impression of our Milky Way in the background, an artist impression of the Gaia space telescope in front of it, and numbers on the sky-scanning phase written in a circle in the foreground: 3 trillion observations, 2 billion stars & other objects observed, 938 million camera pixels on board, 15 300 spacecraft ‘pirouettes’, 55 kilogram cold nitrogen gas consumed, 3827 days in science operations, 50 000 hours ground station time used, 500 terabytes volume of data release 4 (5.5 years of observations), 142 terabytes downlinked data (compressed), 2.8 million commands sent to spacecraft, 13 000 refereed scientific publications so far, 580 million accesses of Gaia catalogue so far.

image - A model image of what our home galaxy, the Milky Way, might look like edge-on, against a pitch-black backdrop. The Milky Way’s disc appears in the centre of the image, as a thin, dark-brown line spanning from left to right, with the hint of a wave in it. The line appears to be etched into a thin glowing layer of silver sand, that makes it look as if it was drawn with a coloured pencil on coarse paper. The bulge of the galaxy sits like a glowing, see-through pearl in the shape of a sphere in the centre of this brown line

A model image of what our home galaxy, the Milky Way, might look like face-on: as viewed from above the disc of the galaxy, with its spiral arms and bulge in full view. In the centre of the galaxy, the bulge shines as a hazy oval, emitting a faint golden gleam. Starting at the central bulge, several glistening spiral arms coil outwards, creating a perfectly circle-shaped spiral. They give the impression of someone having sprinkled pastel purple glitter on the pitch-black background, in the shape of sparkling, curled-up snakes.

Jan 15, 2025, 07:50 PM··Web

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Greg Cocks @GregCocks

video overview - Last Starlight For Ground-Breaking [Spacecraft] Gaia – Mapping The Galaxy
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#GIS #spatial #mapping #galaxy #model #modeling #extraterrestrial #ESA #Gaia #spacecraft #remotesensing #MilkyWay #scanning #survey #spatialanalysis #imagery #research #opendata
@europeanspaceagency

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