Interstellar Symposium: Register Now! The Interstellar Research Group (IRG) is pleased to announce that registration is now open for the 2nd European Interstellar Symposium, taking place December 2 to 4, 2026, in Venice, Italy. This special symposia is hosted by The Venetian Institute of Sciences, Letters and Arts in association with The Interstellar Research Group and […]
Blog
How long does it take to get to the Sun/Earth L4 Point from Earth?
Adam Hibberd Let’s say we eject a spacecraft with a small velocity decrement in the opposite direction to Earth’s own velocity around the Sun, what will happen to it exactly? It will stay around Earth’s heliocentric orbit since its velocity is close to Earth’s, however we shall assume that the spacecraft flies outside of Earth’s […]
What is 1998 KY26?
Adam Hibberd I was recently referred to a paper by Farnocchia et al which apparently, so was it argued, contradicted the notion that 1998 KY26 could be technogenic (man made), in other words a spacecraft. For the uninitiated, 1998 KY26 has always been considered (up-to-recently at least) a Near Earth Asteroid (NEA) of some form […]
Members Newsletter – July
News from i4is I4is return to the Royal Institution, London, UKTwo more of our popular workshops “Skateboards to Starships” are returning this summer to the Royal Institution, 21 Albemarle St, London W1S 4BS.24 August 2026 see https://www.rigb.org/whats-on/holiday-workshops-skateboards-starships-year-10-1325 August 2026 see https://www.rigb.org/whats-on/holiday-workshops-skateboards-starships-year-7-9 Europlanet Science Congress 2026The Europlanet Conference takes place in The Hague, The Netherlands from […]
The Clock is Ticking on Project Lyra
Adam Hibberd Where are the Interstellar Objects (ISOs)? A new observatory (Vera C. Rubin) has been operating for a month and has not yet found any. A month of Vera C. Rubin is probably not long enough for scientists to change models of their abundance. If nothing after a year? Maybe scientists might start considering […]
Members Newsletter – June
There’s no shortage of incredible interstellar content to choose from this month. I4is researchers published! Preliminary Analysis into the Feasibility of Missions to Asteroid 2024 YR4We are delighted that our lead astrodynamicist Adam Hibberd and our friend T Marshall Eubanks (Space Initiative Inc, USA) have a paper published by the American Institute of Aeronautics and […]
Principium 53
Principium 53 has gone out to subscribers and is now accessible to all
Members Newsletter – May
The Board of Directors of i4is and the Editor of Principium will make the following announcement in the next issue of Principium:”The i4is Board has been considering the future of Principium, given changes in the ways in which people receive and consume information and content. We have decided to pause the publication of Principium with […]