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I4IS

@i4interstellar.bsky.social
94 followers 137 following 67 posts

I4IS is a multi-national organisation dedicated to achieving interstellar flight through education, research and development - Knowledge to the Stars!

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John I Davies @johninghamdavies.bsky.social · 18/08/2026
@i4interstellar.bsky.social www.facebook.com/reel/1617491... IRG deadline for 2026 conference papers has moved!
facebook.com
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I4IS @i4interstellar.bsky.social · 11/08/2026
John Davies is @johninghamdavies.bsky.social
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I4IS @i4interstellar.bsky.social · 11/08/2026
Soon : “Skateboards to Starships” workshops in London for ages 11-18 yrs !! John Davies & Rob Swinney of i4iS show how science enables travel to the outer solar system and beyond. - 24 Aug 26, ages 14-18 : www.rigb.org/whats-on/hol... - 25 Aug 26, ages 11-14 : www.rigb.org/whats-on/hol...
rigb.org
Holiday workshops: Skateboards to starships (Year 10 - 13)
Explore how the laws of motion take us from Earth into space.
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I4IS @i4interstellar.bsky.social · 06/07/2026
This 374 page book on Interstellar Travel is available as a FREE eBook...
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Cambridge University Press - Science & Engineering @cambup-scieng.cambridge.org · 09/06/2026
The Physics of Interstellar Travel by Coryn A. L Bailer-Jones A comprehensive guide to the physics of getting an uncrewed spacecraft to nearby stars, suitable for both students and researchers. Available #openaccess via Cambridge Core cup.org/3RNfivs
An image of a book titled "The Physics of Interstellar Travel" by Coryn A. L. Bailer-Jones. The book cover features a setting sun and rocket trail . A quote from Michael Perryman, associated with ESA and University College Dublin, praises the book's importance in future space exploration plans. an open access label is visible in the right hand corner
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I4IS @i4interstellar.bsky.social · 23/04/2026
Here's a really interesting paper, authored by @adamsspaceresearch.bsky.social and many others, on the science that could come from a Proxima Centauri fly-by mission ... arxiv.org/abs/2604.20182
arxiv.org
Science from the In Situ Exploration of the Proxima Centauri System
In the future interstellar exploration at near-relativistic speeds will be possible using beamed energy laser propulsion. With this, spacecraft as small as gm mass picospacecraft become candidates for...
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Isaac Arthur @isaac-arthur.bsky.social · 26/02/2026
Fleet Unity - Humanity’s First Interstellar Armada youtu.be/FgxmxT-iGi4 Humanity’s first interstellar ark becomes something bigger. Explore Fleet Unity—a roaming civilization, ship-turned-shipyard, and the birth of humanity’s first true interstellar armada.
youtu.be
Fleet Unity - Humanity’s First Interstellar Armada
YouTube video by Isaac Arthur
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I4IS @i4interstellar.bsky.social · 12/04/2026
The CALL FOR PAPERS is now open for the 2nd European Interstellar Symposium, taking place 2nd to 4th December 2026, in Venice, Italy. - Abstract submission by July 31 - Abstract Acceptance : Sept 15 - Symposium : Dec 2-4 All contributions are welcome To learn more visit irg.space/second-europ...
irg.space
2nd European Interstellar Symposium - Interstellar Research Group
The Interstellar Research Group is pleased to announce the upcoming special symposia hosted by The Venetian Institute of Sciences, Letters and Arts in association with The Interstellar Research Group ...
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I4IS @i4interstellar.bsky.social · 05/03/2026
Will this be the solution to Interstellar Travel ?
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Adam Hibberd @adamsspaceresearch.bsky.social · 25/02/2026
If you want a layperson's guide concerning the paper I wrote with Marshall Eubanks and Andreas Hein on the subject of missions to 3I/ATLAS using a solar slingshot, go to my starship blog for the Initiative for Interstellar Studies, here: i4is.org/a-mission-to...
i4is.org
A Mission to 3I/ATLAS by Solar Slingshot (a layperson’s guide).
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I4IS @i4interstellar.bsky.social · 25/02/2026
Here's an interesting paper, just published... www.sciencedirect.com/science/arti...
Paper header screenshot.  Paper title "From interplanetary to interstellar:Current status of exploration using space sails and required developments"
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I4IS @i4interstellar.bsky.social · 19/02/2026
Here's another interesting "Interstellar" video from @isaac-arthur.bsky.social .... youtu.be/SxuQ0iadK_w?...
youtu.be
Interstellar Relays - Moving Signals and Spaceships Between the Stars
YouTube video by Isaac Arthur
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Adam Hibberd @adamsspaceresearch.bsky.social · 19/02/2026
Go to my starship blog about intercepting interstellar object 3I/ATLAS by a particular spacecraft trajectory manoeuvre known as a 'Solar Oberth': i4is.org/3i-atlas-is-... @i4interstellar.bsky.social
i4is.org
3I/ATLAS: Is It Worth a Solar Oberth?
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Adam Hibberd @adamsspaceresearch.bsky.social · 07/02/2026
@i4interstellar.bsky.social My latest blog details how my software works at a basic level, and explains how I used it to solve the problem of sending a mission to catch the interstellar object 1I/'Oumuamua: adamhibberd.com/2026/02/07/h...
adamhibberd.com
How to Reach Interstellar Visitors, Optimum Interplanetary Trajectory Software
Adam Hibberd An article I wrote for Principium, quarterly publication of the ‘Initiative for Interstellar Studies’, several years ago now, not long after the first interstellar object p…
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I4IS @i4interstellar.bsky.social · 06/02/2026
This might be of interest to @adamsspaceresearch.bsky.social
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I4IS @i4interstellar.bsky.social · 06/02/2026
We've just sent this link to Mike McCulloch, he explains the non-viable orbits with his Quantised Inertia theory ... he may or may not be correct, we keep an open mind ! ( He's banned from Wikipedia, his blog is at physicsfromtheedge.blogspot.com )
physicsfromtheedge.blogspot.com
Physics with an edge
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I4IS @i4interstellar.bsky.social · 06/02/2026
Interesting, and perhaps of interest to @adamsspaceresearch.bsky.social ?
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I4IS @i4interstellar.bsky.social · 06/02/2026
We're posting here content from older newsletters, join us at www.i4is.org/members for the latest. Dec-25 [2] : this content is already here on Bluesky, see below. The authors describe self-consistent scenarios for future Earth technospheres as analogs for extraterrestrial technospheres....
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I4IS @i4interstellar.bsky.social · 06/02/2026
As elsewhere, we'll post here content from older newsletters, join us at www.i4is.org/members for the latest. Dec-25 [1] : A paper by Colin Snodgrass describes how the ESA Comet Interceptor can provide a conceptual basis for a future mission to visit an Interstellar Object arxiv.org/abs/2512.00492
arxiv.org
Intercepting Interstellar Objects
We describe how the ESA Comet Interceptor mission, which is due to launch in 2028/29 to a yet-to-be-discovered target, can provide a conceptual basis for a future mission to visit an Interstellar Obje...
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I4IS @i4interstellar.bsky.social · 11/01/2026
We're not sure about the science, but Mike McCulloch has spoken on QI at our events in the past ... and if he's right, interstellar travel becomes much easier !
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I4IS @i4interstellar.bsky.social · 03/01/2026
Here's an interesting concept that promises 'easy interstellar propulsion' ...
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irg-space.bsky.social @irg-space.bsky.social · 30/12/2025
Explore how we can become an interstellar species! Watch Michael Nayak's keynote at the IRG 2025 Symposium: youtu.be/hq4cQVSiow4 #IRG2025 #InterstellarSymposium #MichaelNayak
irg.space
Home - Interstellar Research Group
Interstellar Research Group Our 7th Interstellar Symposium will be taking place September 25-27, 2021 (with pre-symposium seminars taking place on the 24th) in Tucson, AZ at the Tucson Marriott University Park. This symposium will directly follow the NASA NIAC symposium at the same hotel, and will t…
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I4IS @i4interstellar.bsky.social · 13/12/2025
Here's a short (2 minute) NASA video on a laser-driven interstellar swarm, published a few months ago... ( Thanks to @bargill33.bsky.social for the link !) youtu.be/XXW_keR5OIM?...
youtu.be
Swarming
YouTube video by NASA Space Tech
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I4IS @i4interstellar.bsky.social · 01/12/2025
Here's another 'Interstellar' video from @isaac-arthur.bsky.social ...
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I4IS @i4interstellar.bsky.social · 30/11/2025
The November issue of our Principium magazine is out now ! Many thanks to our new editor Gill Norman @bargill33.bsky.social and her team for all their hard work, they are introduced in the text. Read it all here : i4is.org/principium-51/
Image of magazine cover and descriptive text.
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I4IS @i4interstellar.bsky.social · 18/11/2025
@isaac-arthur.bsky.social !
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I4IS @i4interstellar.bsky.social · 18/11/2025
Here's a great video from Isaac Arthur covering many aspects of Interstellar colonisation... - What Counts as Interstellar? - Transport and Survival - Nearby Candidates - How Might We Do It? - Sleeper Ships - Interstellar Relays - Cloning and Digital Migration youtu.be/r1VZVmnIZDg?...
youtu.be
The First Interstellar Colony - Humanity’s Leap Beyond Sol
YouTube video by Isaac Arthur
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irg-space.bsky.social @irg-space.bsky.social · 10/11/2025
The Interstellar Research Group is offering three $2,500 scholarships for undergrad, master’s, and doctoral students advancing humanity’s path to the stars. Apply by Dec 15, 2025, at 5 PM EST. Learn more: irg.space/scholarships/2026-scholar… #IRG #STEM #Scholarships
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irg-space.bsky.social @irg-space.bsky.social · 12/11/2025
The Interstellar Research Group is now accepting 2026 scholarship applications for undergrad, master’s, and doctoral students in the U.S. Three $2,500 awards for those shaping humanity’s future among the stars. Apply by Dec 15, 2025: irg.space/scholarships/2026-scholar… #IRG
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irg-space.bsky.social @irg-space.bsky.social · 12/11/2025
Shape humanity’s interstellar future. The Interstellar Research Group seeks visionary leaders to join its Board of Directors. Help guide the global pursuit of interstellar flight and exploration. Apply by Dec 10, 2025: ow.ly/glbc50XpLNt #SpaceLeadership #IRG
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I4IS @i4interstellar.bsky.social · 29/10/2025
This describes five ideas for interstellar travel. As a spoiler, in summary... - Brute-force 'Project Daedalus' - Laser Sail - Bussard Ramjet - Antimatter 'Project Valkyrie' - the 'Light Hugger' Other concepts involve breaking physics, these (just) avoid that. Comments? youtu.be/xJSO-ptwYxw?...
youtu.be
Five Realistic Interstellar Designs
YouTube video by Spacedock
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I4IS @i4interstellar.bsky.social · 02/09/2025
Issue 50 of Principium is now published - Lead Feature : BOOK REVIEW, The Ross 248 Project. - Project Hyperion - Breakthrough Disc - "Where do you look for ET" - IAC25 - The Journals - Interstellar News .. and more ! Read it here : - i4is.org/principium-50/ Editor: @johninghamdavies.bsky.social
i4is.org
Principium 50
Principium 50 – Contents LEAD FEATURE BOOK REVIEW The Ross 248 Project (<a href="https://i4is.org/wp-content/uploads/2025/08/BOOK-REVIEW-The-Ross-248-Project-Principium50-2508261234.pdf">https://i4is...
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Adam Hibberd @adamsspaceresearch.bsky.social · 06/08/2025
My latest starship blog for the Initiative for Interstellar Studies (@i4interstellar.bsky.social): i4is.org/3i-atlas-the...
i4is.org
3I/ATLAS – the Interstellar Controversy.
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Adam Hibberd @adamsspaceresearch.bsky.social · 03/08/2025
My paper with Avi Loeb and Adam Crowl on the subject of bringing Juno as close to 3I/ATLAS as possible: www.researchgate.net/publication/...
researchgate.net
(PDF) Intercepting 3I/ATLAS at Closest Approach to Jupiter with the Juno spacecraft
PDF | The interstellar object 3I/ATLAS is expected to arrive at a distance of $53.56(\pm 0.45)$ million ${\rm km}$ ($0.358\pm 0.003$~au) from Jupiter on... | Find, read and cite all the research you n...
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I4IS @i4interstellar.bsky.social · 29/07/2025
🌌 Announcing the Winners of the Project Hyperion Design Competition 🌌 ... hosted by i4iS. Can we imagine a society that thrives on the journey to the stars? 🏆 Winners 🥇 Chrysalis 🥈 WFP Extreme 🥉 Systema Stellare Proximum Plus 10 mentions... Full details are here : www.projecthyperion.org
projecthyperion.org
Project Hyperion | interstellar generation ship design competition
Project Hyperion explores the feasibility of crewed interstellar travel via generation ships, using current and near-future technologies. A generation ship is a hypothetical spacecraft designed for lo...
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I4IS @i4interstellar.bsky.social · 26/07/2025
Our astrodynamicist @adamsspaceresearch.bsky.social is presenting on "Flying to a Potentially Hazardous Object..." on 20Sep25 with T Marshall Eubanks, hosted by the BIS. They'll present research into a mission to PHO 2024 YR4, which may hit the Moon in 2032. www.bis-space.com/event/bis-we...
bis-space.com
BIS West Midlands Branch: Flying to a Potentially Hazardous Object - A Mission of Gravity - The British Interplanetary Society
How might humanity send a mission to explore or even deflect a potentially hazardous object (PHO)? A PHO is a celestial body, usually an asteroid, which regularly intersects Earth’s orbit and, dependi...
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I4IS @i4interstellar.bsky.social · 21/07/2025
Here's an interesting paper by our member @adamsspaceresearch.bsky.social et al. There's been criticism that it proposes alien origin for 3/Atlas, but it says that is not so : it's an academic exercise mentioning our habit of seeing pattern in randomness. Please comment! arxiv.org/abs/2507.12213
arxiv.org
Is the Interstellar Object 3I/ATLAS Alien Technology?
At this early stage of its passage through our Solar System, 3I/ATLAS, the recently discovered interstellar interloper, has displayed various anomalous characteristics, determined from photometric and...
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Adam Hibberd @adamsspaceresearch.bsky.social · 17/07/2025
Go to my starshp blog for i4is which can be found here: i4is.org/wp-admin/pos... It raises a hypothetical question and mentions the various evidence in favour. It emphasises that the investigations are merely a pedagogical exercise. @i4interstellar.bsky.social Preprint: arxiv.org/abs/2507.12213
arxiv.org
Is the Interstellar Object 3I/ATLAS Alien Technology?
At this early stage of its passage through our Solar System, 3I/ATLAS, the recently discovered interstellar interloper, has displayed various anomalous characteristics, determined from photometric and...
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I4IS @i4interstellar.bsky.social · 13/07/2025
Here's a recent video from @hoojiwana.bsky.social talking about the recent 'Pulsar Fusion' publicity. Are his conclusions correct ? Or will Pulsar take us to the stars ? Comments are welcome !!
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I4IS @i4interstellar.bsky.social · 02/07/2025
This could be interesting, especially if @adamsspaceresearch.bsky.social can find a good spacecraft rendezvous option ...
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Paul Gilster @gilster.bsky.social · 11/06/2025
Inflatable sails offer steep savings in mass & enable larger payloads. I look today at deep space concepts involving this technology, & new studies on using inflatable structures for exoplanet research via a starshade. www.centauri-dreams.org/2025/06/11/i...
centauri-dreams.org
Inflatable Technologies for Deep Space | Centauri Dreams
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I4IS @i4interstellar.bsky.social · 11/06/2025
Registration is open for the 9th Interstellar Symposium in Austin, Texas, 12-15 October 2025. irg.space/2025-irg-9th...
irg.space
2025 - Austin, Texas - Interstellar Research Group
Distant Worlds, Neighboring Opportunities An Interstellar Research Group EventOctober 12-15, 2025 AT&T Conference CenterUniversity of Texas at Austin CALL FOR PAPERS REGISTER TODAY HOTEL RESERVATION I...
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I4IS @i4interstellar.bsky.social · 08/06/2025
Exciting voluntary role ! Do you know layout software? We need a new voluntary Layout Editor for our quarterly online magazine Principium. We provide the software and training. The team will supply the content; you would put it all together. Join our commitment to expanding humanity’s horizons!
Exciting voluntary role for anyone interested in science and/or publishing!
Do you have experience with layout software (eg Adobe InDesign, Microsoft Publisher, etc) or are learning how do document design? 
We need a new voluntary Layout Editor for our quarterly online magazine Principium. We will provide the software for you and can provide basic training to fulfil this role if required. 
The editorial team will supply the written content; you will be responsible for putting it all together into the pdf ready for publication.
Join our commitment to expanding humanity’s horizons! 
Please get in touch with us asap by emailing gillian.norman@i4is.org; we'd love to see a brief summary of your skills and experience and it would be great to hear why you want to help!Here’s the details
Principium is a quarterly magazine published since 2012 by the Initiative & Institute for Interstellar Studies (www.i4is.org).  
It's published as a PDF on the i4is website www.i4is.org/Publications/Principium and in print for major conferences.  
It goes to about 1,000 aerospace professionals, academics and interested lay people in countries around the word including many in the US and UK. 
The layout role is to create the PDF of each new issue using the existing issue as a start point. We currently use Adobe InDesign, which is a widely used document layout tool (https://www.adobe.com/uk/products/indesign.html) but alternatives would be OK.
The commitment would be to about 4-5 days work each quarter depending of course on existing expertise. The current Principium Editor, John Davies, is ready to provide initial guidance plus support for the first issues and the incoming Editor, Gill Norman, would be coordinating the work with the rest of the team.
The role would suit anyone with design talent and enthusiasm for this creative work. We would welcome expressions of interest from students seeking to gain experience and enhance their CVs. But we would also be very pleased to hear from others who wish to diversify their careers or are seeking interesting work post-retirement.
This is a pro bono (unpaid) role but agreed expenses would be paid, including software licences.
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I4IS @i4interstellar.bsky.social · 07/06/2025
Here's another excellent video by @fcain.universetoday.com describing a breakthrough in light sail technology... youtu.be/iHLm9oHMsyM?...
youtu.be
Punching NanoHoles in Light Sails Can Bring Us Closer to Alpha Centauri
YouTube video by Fraser Cain
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I4IS @i4interstellar.bsky.social · 29/05/2025
We are leading two 1-day Workshops at The Royal Institution in London for young space scientists/engineers/dreamers ! "Skateboards to Starships" - Age 12–14 : 07Aug25 www.rigb.org/whats-on/hol... - Age 15–18 : 08Aug25 www.rigb.org/whats-on/hol... Led by @johninghamdavies.bsky.social & others
rigb.org
Holiday workshops: Skateboards to starships (age 15–18)
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I4IS @i4interstellar.bsky.social · 21/04/2025
From 2024, here's the Project Lyra* mission guide by @adamsspaceresearch.bsky.social in a starship blog on our website. i4is.org/project-lyra... * Project Lyra is the study of missions to chase down the interstellar object 11/'Oumuamua, in order to determine once and for all what this thing is...
Project Lyra Mission Guide : a full data table
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I4IS @i4interstellar.bsky.social · 17/04/2025
@nmadhu.bsky.social
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I4IS @i4interstellar.bsky.social · 17/04/2025
This is everywhere in the news today ... "The Cambridge group has found that the atmosphere seems to contain the chemical signature of at least 1 of 2 molecules... associated with life: dimethyl sulphide and dimethyl disulphide. On Earth ... produced by marine phytoplankton and bacteria."
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I4IS @i4interstellar.bsky.social · 15/04/2025
Again, a fusion-powered interplanetary spacecraft would be good for Interstellar precursor trips, and the technology could be developed for true Interstellar missions.
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I4IS @i4interstellar.bsky.social · 03/04/2025
Here are videos from the recent Symposium... "... keynote presentations ... tackling the challenges of humanity’s journey to the stars ... propulsion breakthroughs, astrobiology, long-duration missions ... dive deep into the technologies, ethics, and aspirations... " youtube.com/playlist?lis...
youtube.com
First European Interstellar Symposium: Building Our Home Amoung The Stars - YouTube
Step into the future of space exploration with the First European Interstellar Symposium, hosted by the Interstellar Research Group in collaboration with Ini...
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