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Mercury is doing something strange. A ghostly glow trails behind the night side of our solar system's innermost planet, stretching millions of kilometers into the darkness of space yet remaining invisible to human eyes. Join us as we investigate one of the most baffling secrets of this seemingly barren world, proving that even the most familiar planets in our cosmic neighborhood still hold astonishing surprises.

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0:00 What Is Mercury Doing?
2:24 The Tail
4:38 Sodium
10:01 Glimpsing the Invisible
13:27 Doppler Shift
14:23 Perfect Timing
16:04 Cosmic Implications

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References:
“Mercury Facts”, via nasa.gov https://astrumspace.info/mercuryfacts
“Imaging the sources and full extent of the sodium tail of the planet Mercury”, via wiley.com https://astrumspace.info/sodiumtail
“See Mercury's giant, comet-like tail in stunning new image as it passes close to the sun”, via space.com https://astrumspace.info/mercurystail
“Photoionization Loss of Mercury's Sodium Exosphere: Seasonal Observations by MESSENGER and the THEMIS Telescope”, via wiley.com https://astrumspace.info/MESSENGERobs
“Micro-meteoroids impact vaporization as source for Ca and CaO exosphere along Mercury's orbit”, via sciencedirect.com https://astrumspace.info/micro-meteoroids
“What is a Coronagraph?”, via space.com https://astrumspace.info/coronagraph
“Surprise: The Moon Doesn’t Just Have An Atmosphere, But A Tail, Too”, via forbes.com https://astrumspace.info/moontail
“Missions to Mercury”, via esa.int https://astrumspace.info/missionstomercury
“BepiColombo”, via nasa.gov https://astrumspace.info/BepiColombo


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Credits
Writer: Julia Masselos
Video Editor: Frame Forge
Researcher: Edie Abrahams
Thumbnail Designer: Peter Sheppard
Channel Manager: Georgina Brenner
Executive Producer: Raquel Taylor
Creator of Astrum: Alex McColgan

With special thanks to:
Dr. Sebastian Voltmer | voltmer.photo | www.youtube.com/@spacemovie

#astrum #space #mercury