Preprints from Principium 50, August 2025Members can access preprints of articles to be published in Principium issue 50 August 2025. Please report any errors or omissions to the Editor at – john.davies@i4is.orgThe preprints are –· International Astronautical Congress – IAC25 – Sydney 29 September – 3 October -Announced Interstellar PresentationsWhether you are attending this year’s […]
Blog
3I/ATLAS: What if?
Adam Hibberd My paper with Adam Crowl and Avi Loeb is out today, and we have collectively been doing what scientists and philosophers have been doing since time immemorial, and that is asking questions, and exercising our imaginations in the process. In this case the question goes like this: ‘is 3I/ATLAS, the third interstellar interloper […]
Missions to 3I/ATLAS
Adam Hibberd The third interstellar object is causing a bit of a stir. What could it be exactly? Judging by its predicted path, we should get a ring-side view of it from Earth, except for an important viewing outage as it approaches perihelion – the closest approach to the Sun – simply because it will […]
Members Newsletter – June
I4is Workshops at the Royal Institution London 7/8th AugustThe i4is education team will be once again bringing the Skateboards to Starships workshops to the Royal Institution in August. For those not familiar we show how the physics and maths of jumping off a skateboard can be used to understand how rockets work and how different […]
Principium 49
Principium 49 has gone out to subscribers and is now accessible to all.
Members Newsletter – May
i4is Workshops at the Royal Institution of Great BritainFor the first time i4is has been invited to deliver a second set of Holiday Workshops at the Royal Institution of Great Britain. Sign up your budding space scientists, engineers and just dreamers. The workshops are typically limited to 24 school students so sign up now!Holiday workshops: […]
Direct Missions to ‘Oumuamua
Adam Hibberd There has been a lot of discussion around what would be the best route to catch that most mysterious and outrageously quirky interstellar interloper 1I/’Oumuamua, and I have personally investigated all sorts of spacecraft mission scenarios; using a combination of gravity assists (where kinetic energy is gained by the spacecraft’s encounter with a […]
Members Newsletter – April
Is There Life on an Alien Planet?Universe Today and others report Is There Life on an Alien Planet? Fresh Findings Revive the Debate, Alan Boyle April 17, 2025 (https://www.universetoday.com/articles/fresh-findings-fuel-debate-about-life-on-alien-world).Boyle cites two papers – {Deciphering Sub-Neptune Atmospheres: New Insights from Geochemical Models of TOI-270 d, Christopher R. Glein, Xinting Yu and Cindy N. Luu (all Southwest […]