Initiative for Interstellar Studies

Working towards the achievement of interstellar flight through knowledge to the stars - Starships in our lifetime

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Principium Preprints

Collections of articles due to be published in upcoming issues of our quarterly, Principium. The articles you find here are made available exclusively to our members before they are made freely available.

  Early access to Principium articles is one of perks of being a member. To view these preprints, please sign up for i4is membership.

TitleAuthorAdded
The JournalsDavies, J2024-04-22
Biological intelligence vs AI - and the Fermi ParadoxDavies, J2024-04-22
Our fifth Skateboards to Starships workshopDavies, J2024-04-22
Glasgow 24 SF Worldcon - An i4is updateDavies, J2024-04-22
Book Review: Contact with Extraterrestrial
Intelligence and Human Law		Gamtkitsulashvili, K and Manukonda, B2024-04-22
IRG 23: X-ray and γ-ray Beam
Interstellar Communication and
Implications for SETI		Milne, P2023-11-07
IRG 23: The Linguistics of
Arrival, Universal Grammar and Interstellar Communication		Cranston, A2023-11-07
IRG23: Silence is Golden: SETI
and the Fermi Paradox		Wardman, M2023-11-07
IRG23: Infrastructure
Development Leading to the First
Long-Duration Interstellar Probe		Davies, J2023-11-07
i4is at the Royal Institution
2023 - our fourth year		Davies, J2023-11-07
IRG23: Applications and Design Guidelines for High Power LasersGahan, D2023-11-07
The i4is members' pageSingh, P2023-04-30
Project Lyra: What SpaceX could do: The Way to Go and the Launcher to Get ThereHibberd, A2023-04-30
Cost-Optimal System Performance Maps for Laser-Accelerated SailcraftHibberd, A2023-04-30
IRG23 Preview: 8th Interstellar Symposium, McGill University, Montreal, July 10 – 13, 2023Davies, J2023-04-30
IAC22 The Interstellar Presentations - part 2Davies, J2023-02-04
Volunteering Posteri4is2023-02-04
Searching for Alien Messages to a Nearby StarSwinney, R2023-02-04
Book Review: Life in the CosmosHein, A2022-08-07
Two Equations to the Stars - Part Two: The Photon Sail EquationDavies, J2022-07-22
IAC 2022: The Interstellar PapersDavies, J2022-07-11
P37: Interstellar NewsDavies, J2022-05-02
Two Equations to the Stars -
Part One: The Rocket Equation		Davies, J2022-05-02
Finding new ways to share
resources in space		Daniels, M2022-05-02
The Tsiolkovsky Rocket Equation:
A Parallel Derivation		Hay, A2022-05-02
A brief on IAC2021: Inspire,
Innovate and Discover
For the Benefit of Humankind		AbdelFattah, S2022-01-25
The Icarus Firefly DownlinkDavies, J2022-01-25
7th Interstellar Symposium - The Hallway is More Important than the Podium...Meany, J; Leahy, B
2022-01-25
Design of Interplanetary Missions
to Jupiter Using Optimum
Interplanetary Trajectory
Software		Hibberd, A2022-01-25
Optimal Strategies for Exploring Near-by StarsLebert, J2021-08-15
2014 UN271 Spacecraft MissionsHibberd, A2021-08-03
72nd International Astronautical Congress 2021: The Interstellar PapersDavies, J2021-07-18
News Feature: Mission to 2014 UN271 using OITSDavies, J2021-07-08
Practicalities and Difficulties of a Mission to 'OumuamuaHibberd, A2021-05-07
Worldship and self replicating systemsLamontagne, M2021-02-07
The Artemis Accords: what comes after the Moon?Daniels, M2021-02-07
AMiTe Treffpunkt — A proposal for communication between Kardashev Type IIb civilisationsGahan, D F2021-01-31
News Feature: The 2020 ISU Masters Elective Module: Part 2Davies, J2020-10-31
News Feature: Breakthrough Starshot Communications WorkshopKennedy III, R G2020-10-31
The Interstellar Downlink: Principles and Current WorkDavies, J2020-10-31
Book Review: Extraterrestrial Languages by Daniel OberhausDavies, J2020-10-31
The Interstellar Objects and Sample ReturnsHibberd, A2020-10-31
The Stars: Humanity’s DestinationBennett, G L2020-08-20
Interstellar News—2020-08-20
IAC 2020 — Timetable of Interstellar Papers—2020-08-20
News Feature: The 2020 ISU Masters Elective ModuleDavies, J2020-08-20
Implications for an Interstellar World-ship in findings from the BIS SPACE ProjectSoilleux, R2020-08-20
Cassidy Cobbs - BioscientistKennedy, R. & Davies, J. I.2020-05-20
Become an i4is memberMahon, P2020-05-08
The i4is Members Page—2020-05-08
Freeman Dyson (1923-2020)Hein, A2020-05-08
The Interstellar Ram Jet at 60Jackson, A A2020-05-07
Note on use of WikipediaDavies, J. I.2020-05-06
News Feature: IAC: The Interstellar Papers – Part 1Davies, J. I.2020-05-06
Rings around earth-like exoplanets as possible artificial megastructuresNovoseltsev, D.2020-05-06
BOOK REVIEW: The Contact Paradox: Challenging our Assumptions in the Search for Extraterrestrial IntelligenceMahon, P2020-02-26
News Feature: IAC:
The Interstellar Papers – Part 2		Davies, J. I.2020-02-26
News Feature: TVIW's 6th Interstellar Symposium and Advanced Interstellar Propulsion WorkshopMeany, J.2020-01-12
The Equation used in the Benkoski Paper: A DerivationHibberd, A2020-01-12
What Do We Really Know About The Outer Solar System?Sutton, P.2020-01-12
How low can you go? - The Benkowski equationHibberd, A. & Davies, J. I.2019-11-17
News Feature: IAC: The Interstellar Papers – Part 1Davies, J. I.2019-11-17
On a possible future direction for optical SETINovoseltsev, D.2019-11-17
Timetable of Interstellar Papers (IAC)—2019-08-01
Competition RESULT—2019-08-01
The State of the Art in Fusion PropulsionSchillo, K.2019-08-01
News Feature: The Membership TeamDavies, J. I.2019-04-04
Fine Tuning our Lasers: Updates on Project Dragonfly and GlowwormFries, D.2019-04-04
Précis of progress & activity by i4is-USKennedy III, R. G.2019-04-04
News Feature: IAC 2018 Special Session - Swarm SystemsDavies, J. I.2019-04-04
News Feature: All Comets Great and SmallDavies, J. I.2019-04-04
Amerigo: Brief Overview of a 1000 AU probe studyBockett, J.2019-02-02
Territory in Outer SpaceDaniels, M.2019-02-02
The TVIW Power of Synergy Symposium: Promoting a Grand TransformationRather, J. D G2019-02-02
Project Glowworm: Testing Laser Sail Propulsion in Low Earth OrbitBurkhardt, Z.2019-02-02

= Awaiting publication
= Published

The articles available here may differ from the final published articles.