@einionyn

Project Scientist for @BepiColombo at @esa. @cometintercept mission lead proposer. @astrojots doodler. Low vowel-count tweets likely Welsh!

iris.ucl.ac.uk/iris/browse/profile?upi=GHJON25
Joined April 2009
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Geraint Jones retweeted
ESA Science
@esascienceJul 16
Getting there 🛰️ After an eight-year journey through the inner Solar System, the ESA/JAXA @BepiColombo mission will arrive at Mercury later this year. The arrival happens in stages. Here's what to expect 👇 🔭 🧪 #MercuryArrival
An infographic showing the different stages of BepiColombo's arrival at Mercury. Each step shows the configuration of the different spacecraft as they separate from one another, depicted as simplified grey drawings on a dark blue background. A vertical line connects the image for each step to the corresponding date and description at the bottom. An image of Mercury lies on the right edge of the infographic.

ALT An infographic showing the different stages of BepiColombo's arrival at Mercury. Each step shows the configuration of the different spacecraft as they separate from one another, depicted as simplified grey drawings on a dark blue background. A vertical line connects the image for each step to the corresponding date and description at the bottom. An image of Mercury lies on the right edge of the infographic.

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Geraint Jones retweeted
BepiColombo
@BepiColombo21 Nov 2025
It's one year until we reach Mercury to stay! Follow this link to catch up with what we've been up to during our trip to this fascinating little planet! 🙂#bepicolombo
ESA Science
@esascience21 Nov 2025
7️⃣years in space 9️⃣flights past 3️⃣planets 1️⃣ year to go until @BepiColombo arrives at Mercury! 🫡 🤓Rest assured, we’ve made the most of the mission’s winding journey to its destination 👉 esa.int/Science_Exploration/…
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Geraint Jones retweeted
BepiColombo
@BepiColombo24 Jan 2025
🤔In space, no one can hear you... make an orbit-bending flyby of Mercury. So BepiColombo recorded its vibrations and turned them into sounds
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We had an exciting time at ESA ESOC yesterday watching these beautiful images come in. These already amazing views are from engineering monitoring cameras; the science cameras will give us far better images after we arrive in orbit in late 2026. #BepiColombo
BepiColombo
@BepiColombo9 Jan 2025
Our top three images from the sixth Mercury flyby are here! 🌗 See what they reveal about the mysterious planet here 👉 esa.int/Science_Exploration/… and in 🧵👇
Image taken by BepiColombo during its sixth Mercury flyby. Planet Mercury is visible in the background with its grey, cratered, pock-marked surface. In the foreground are some spacecraft parts.

ALT Image taken by BepiColombo during its sixth Mercury flyby. Planet Mercury is visible in the background with its grey, cratered, pock-marked surface. In the foreground are some spacecraft parts.

Image taken by BepiColombo during its sixth Mercury flyby. Planet Mercury is visible in the background with its grey, cratered, pock-marked surface. In the foreground are some spacecraft parts.

ALT Image taken by BepiColombo during its sixth Mercury flyby. Planet Mercury is visible in the background with its grey, cratered, pock-marked surface. In the foreground are some spacecraft parts.

Image taken by BepiColombo during its sixth Mercury flyby. Planet Mercury is visible in the background with its grey, cratered, pock-marked surface. In the foreground are some spacecraft parts.

ALT Image taken by BepiColombo during its sixth Mercury flyby. Planet Mercury is visible in the background with its grey, cratered, pock-marked surface. In the foreground are some spacecraft parts.

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Exciting days ahead - the final encounter with Mercury until #bepicolombo enters orbit around the planet in late 2026.
BepiColombo
@BepiColombo6 Jan 2025
🛰️🌑We're gearing up for BepiColombo's sixth Mercury flyby, coming up this Wednesday! ℹ️Closest approach is 295 km at 06:59 CET We'll investigate Mercury's cold night side, north pole craters, and the vast northern plains 👇esa.int/Science_Exploration/…
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Geraint Jones retweeted
ESA Science
@esascience9 Dec 2024
Last week, @BepiColombo became the first spacecraft to image planet Mercury in mid-infrared light 🔥 Using @MERTISonBepi, the mission will uncover what Mercury's surface is made of 👇 esa.int/Science_Exploration/…

BepiColombo reveals Mercury in a new light

On 1 December 2024, BepiColombo flew past Mercury for the fifth time. During this flyby, BepiColombo became the first spacecraft ever to observe Mercury in mid-infrared light. The new images reveal...

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Geraint Jones retweeted
BepiColombo
@BepiColombo1 Dec 2024
Mercury in motion... One of the #BepiColombo selfie-cameras captured Mercury today as the spacecraft rushed by the planet at almost 3 km per second. 🛰️💨 This time-lapse of unprocessed images was captured during 10:26-11:18 UTC today (11:26-12:18 CET), between 53700 and 48000 km from the planet's surface. 📸
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Geraint Jones retweeted
BepiColombo
@BepiColombo1 Dec 2024
A successful encounter! #BepiColombo passed Mercury today, gathering valuable science data. 🛰️🌖 As expected, as we were further from the planet than during previous encounters, the planet was quite small in the selfie-cam pictures. Here's an image taken at 10:46 UTC (11:46 CET), when over 51 000km from the surface.
An image of Mercury taken by the BepiColombo spacecraft at 10:46 UTC on 1 December 2024, over 51000 km from the planet's surface.

ALT An image of Mercury taken by the BepiColombo spacecraft at 10:46 UTC on 1 December 2024, over 51000 km from the planet's surface.

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Geraint Jones retweeted
BepiColombo
@BepiColombo1 Dec 2024
Right now, #BepiColombo is at its closest point to Mercury during its fifth encounter with the planet. The spacecraft is 37 360 km from the surface. Data gathered by its instruments will be sent back to Earth during today and tomorrow. 📡⚡️🛰️
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Coming up this Sunday! #BepiColombo #Space
ESA Science
@esascience29 Nov 2024
This Sunday, @BepiColombo will fly past Mercury for the fifth time. Here's an overview of what you can expect 👇 esa.int/ESA_Multimedia/Image…
Infographic explaining BepiColombo’s fifth flyby of Mercury. In the centre of the infographic we see the spacecraft flying past the planet. On the left we see the inner Solar System in perspective, with the positions of Mercury, Venus and Earth indicated. On the right we see which of BepiColombo’s instruments will be activated during the flyby.

ALT Infographic explaining BepiColombo’s fifth flyby of Mercury. In the centre of the infographic we see the spacecraft flying past the planet. On the left we see the inner Solar System in perspective, with the positions of Mercury, Venus and Earth indicated. On the right we see which of BepiColombo’s instruments will be activated during the flyby.

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Geraint Jones retweeted
BepiColombo
@BepiColombo29 Nov 2024
#BepiColombo will fly less than 40 000 km above Mercury's surface this Sunday, marking its fifth flyby of the planet. 🆕Its MERTIS instrument will observe the planet in mid-infrared light, making BepiColombo the first spacecraft ever to do so 😎
ESA Science
@esascience29 Nov 2024
This Sunday, @BepiColombo will fly past Mercury for the fifth time. Here's an overview of what you can expect 👇 esa.int/ESA_Multimedia/Image…
Infographic explaining BepiColombo’s fifth flyby of Mercury. In the centre of the infographic we see the spacecraft flying past the planet. On the left we see the inner Solar System in perspective, with the positions of Mercury, Venus and Earth indicated. On the right we see which of BepiColombo’s instruments will be activated during the flyby.

ALT Infographic explaining BepiColombo’s fifth flyby of Mercury. In the centre of the infographic we see the spacecraft flying past the planet. On the left we see the inner Solar System in perspective, with the positions of Mercury, Venus and Earth indicated. On the right we see which of BepiColombo’s instruments will be activated during the flyby.

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Isti mirant stella. 14/10/2024 #CometC2023A3 #comet #comettsuchinshanatlas #katwijk – at Katwijk, Nederland
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That straight line across the Sun's disk (arrowed) in @MissionSoho LASCO C2 images is part of #CometC2023A3 's dust tail, which is lying in a sheet in the comet's orbital plane. Earth will cross it at a different time to SOHO, as Sun-SOHO-Earth is not a perfectly straight line.
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Earth, together with @MissionSoho & other spacecraft at Lagrange Points L1 & L2, will cross #Comet Tschuchinsan-ATLAS's dust tail today. The tiny particles reaching Earth left the comet around 2 weeks ago, & are affected >3 times more by sunlight than by Sun's gravitational pull.
Karl Battams@SungrazerComets13 Oct 2024
Pretty cool to see the dust trail of Comet Tshuchinsan-ATLAS entering the upper-right corner of @MissionSoho LASCO C2! The reason it's still so visible is because of that "forward scattering" effect we've been taking about, i.e. the dust is being "backlit" by sunlight
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These teeny-tiny grains near Earth are literally being pushed out of the solar system by the pressure of sunlight! All of the dust lying between us and the Sun will form a line running across the Sun's disk in a few hours, as we cross the "fan" of dust in the tail. #CometC2023A3
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Geraint Jones retweeted
BepiColombo
@BepiColombo13 Sep 2024
Sit back, relax, and enjoy this beautiful timelapse of last week's Mercury flyby, set to some special music inspired by a crater that appears in some images 😉
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O Fôn i Fercher... Da gweld @LiamTEdwards yng nghyfarfod EPSC yn Berlin wythnos diwethaf. Y ddau ohonom yn gweithio ar brofydd @BepiColombo i'r blaned boeth.
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For non-Welsh speakers, the Google translation of the above tweet is largely gibberish! It should start with "From Anglesey to Mercury..."! – at Berlin, Germany
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Geraint Jones retweeted
ESA Science
@esascience6 Sep 2024
Until 16 September, you can apply for the #ESAResearchFellowships. Join us to: 📋 carry out your independent scientific research 🧑‍🏫 learn from our scientists & engineers 🤝 foster collaborations Discover how you can join us here 👉 cosmos.esa.int/web/space-sci…
Advertisment for the ESA Research Fellowships in Space Science.

ALT Advertisment for the ESA Research Fellowships in Space Science.

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