Principium

LEAD FEATURE The Icarus Firefly Downlink
FEATURES: Project Lyra: A Mission to 1I/’Oumuamua without Solar Oberth Manoeuvre, Design of Interplanetary Missions to Jupiter Using Optimum Interplanetary Trajectory Software
NEWS FEATURES: JBIS Index 2021, 72nd International Astronautical Congress 2021: The Interstellar Papers, A brief on IAC2021: Inspire, Innovate and Discover For the Benefit of Humankind, 7th Interstellar Symposium – The Hallway is More Important than the Podium…, The Journals
INTERSTELLAR NEWS: A real, albeit humble, warp bubble (continued)? ; Announcement from IRG, – See what we heard at Tucson; Free-floating planets in the Upper Scorpius, Capture of interstellar objects; Solid core thermal antimatter propulsion;, Feasibility of space solar power, Hyper-Fast Positive Energy Warp Drives; IEEE reports – A Pinch of Fusion, 100 GW beamer by coherent combination of 100 M lasers, JWST – so far so good; Interstellar communication from hypothetical alien, probes, UCSB on Economics of Interstellar Flight; Beyond Solar System – beware, Dark Matter, Trappist 1 – Gravitational Lens in 8 Years, Tailpiece: Wacky Scientists hire, wacky vicars – or not?
REGULARS: Keep An Eye On Our Facebook Page, Membership Poster (white), Become an i4is member, Volunteer Poster: Working towards the real Final Frontier, The i4is members’ page, Membership Poster (black), Next issue, Cover images.

Download Issue 36 View Announcement

• Interstellar Research Group Symposium 2021
• International Astronautical Congress 2021: The Interstellar Papers
• The downlink from swarming micro-probes
• News Features
  • The journey of Bernardinelli-Bernstein
  • Loeb on an Artificial Origin for `Oumuamua
  • The Journals
• Nine pages of Interstellar News
• i4is Members’ Page
• Losing Access to Space – Are we building a fence around our planet? – A personal view

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• Optimal Strategies for Exploring Near-by Stars
• 2014 UN 271 Spacecraft Missions
• International Astronautical Congress 2021 – The Interstellar Papers
• News Features
  • The Journals: JBIS and Acta Astronautica
  • Mission to 2014 UN 271 using OITS
  • Another review of Avi Loeb’s Extraterrestrial
• 8 pages of Interstellar News
• i4is Members’ Page

Download Issue 34 View Announcement

This issue features –

• LEAD FEATURE: Practicalities and Difficulties of a Mission to ‘Oumuamua
• The Self Replicating Factory: a work in progress
• The i4is Members Page
• Project Pinpoint: Pushing the Limits of Miniaturization
• Become an i4is member
• News Features:
  • The i4is Talk Series – 2020 and 2021
  • The 2021 ISU Masters Elective and Masters Projects
  • The 10 parsec sample in the Gaia era
  • i4is wins major contract in Interstellar Studies
• Interstellar News
• Book Review: Simone Caroti – The Generation Starship In Science Fiction
• Book Review: Avi Loeb – Extraterrestrial: The First Sign of Intelligent Life Beyond Earth

Download Issue 33 View Announcement

This issue features –

• AMiTe Treffpunkt — A proposal for communication between Kardashev Type IIb civilisations
• The Artemis Accords: what comes after the Moon?
• Worldship and self replicating systems
• An Interstellar Visitor: sorting the fact from the speculation
• 71st International Astronautical Congress 2020: The Interstellar Report — Part 2 of 2
• News Feature: Starshot Downlink Webinar
• The i4is Members Page & Become an i4is member
• Interstellar News

Download Issue 32 View Announcement

This issue features –

• Interstellar Objects & Sample Returns
• International Astronautical Congress 2020
• The Interstellar Downlink
• Book Review: Extraterrestrial Languages — Daniel Oberhaus
• News Features:
  • i4is Project Glowworm
  • i4is Technical Team
  • Hints of life on Venus
  • Breakthrough Starshot Communications Workshop — May 2020
  • The 2020 ISU Masters Elective Module — Part 2
• Interstellar News
• i4is Members Page

Download Issue 31 View Announcement

This issue features –

• Worldship Implications of the BIS SPACE Project
• 2020 ISU MSS Elective Module
• i4is-supported ISU MSS Projects – Bussard Ramjet & Deceleration of Interstellar Probes
• 71st IAC 2020 Timetable of Interstellar Papers
• Cassidy Cobbs – Bioscientist – Part 2
• Interstellar News
• The Cathedral and the Starship
• FISW2 videos and presentations
• Educating i4is: the i4is Education Team
• Alfred M Worden – A personal reflection

Download Issue 30 View Announcement

This issue features –

• Cassidy Cobbs – Bioscientist
• Interstellar News
• The Interstellar Ram Jet at 60
• IAC2019 the Interstellar Papers #3
• FAST radio telescope & Breakthrough Listen
• Rings round exoplanets – possible megastructures
• Mariner model part 2: The initial construction phase
• i4is Members Page
• Freeman Dyson (1923-2020)
• Feasibility of self-replicating probes for interstellar exploration
• Book Review: Religions and Extraterrestrial Life

Download Issue 29 View Announcement

This issue features –

• IAC 2019 – Second Report
• Book Review: The Contact Paradox
• TVIW’s 6th Interstellar Symposium
• What do we really know about the Outer Solar System?
• The Equation used in the Benkoski Paper – A Derivation
• Interstellar Objects – Oumuamua, Borisov & objects in between
• i4is Members Page & Become an i4is member
• Interstellar News

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This issue features –

• On a possible future direction for optical SETI
• IAC Oct 2019 — First Report
• How to reach Interstellar Visitors — Optimum Interplanetary Trajectory Software
• How low can you go? — The Benkowski equation
• i4is Members Page & Become an i4is member
• Interstellar News

Download Issue 27 View Announcement

This issue features –

• Foundations of Interstellar Studies Workshop 2019
• The State of the Art in Fusion Propulsion – part 2
• A Mariner 2 model
• Interstellar News
• News Features:
  • The Principium Team
  • Starship Congress 2019
  • ESA Interstellar Workshop
  • Apollo Poetry Competition result
  • IAC Oct 2019 – i4is team and interstellar timetable
  • ISU ChipSat Spacecraft and Mission Design elective
• i4is Members Page & Become an i4is member

Download Issue 26 View Announcement

This issue, Our third MEMBERSHIP Edition, features –

• The State of the Art in Fusion Propulsion
• Overview: TVIW 2018 Symposium
• Second Foundations of Interstellar Studies workshop
• Extreme Deep Space Exploration
• Competition: From Apollo to the stars!
• Progress & activity by i4is-US 2017-2019
• Fine Tuning Lasers: Project Dragonfly and Glowworm
• i4is Members Page and Become an i4is member
• Interstellar News
• News Features:
  • Oumuamua, Project Lyra and ISOs
  • Indian Anti-Satellite test
  • All Comets Great and Small
  • IAC 2018 – Swarm Systems
  • i4is-US at annual MIT Beyond the Cradle event
  • The Membership Team

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This issue, Our second MEMBERSHIP Edition, features –

• Project Glowworm: Testing Laser Sail Propulsion in Low Earth Orbit
• Amerigo: Brief Overview of a 1000 AU probe study
• TVIW Power of Synergy Symposium
• Project Daedalus – A Beginners’ Guide
• Interstellar News
• News Features –
  • Oumuamua, Project Lyra and Interstellar Objects
  • 69th International Astronautical Congress 2018
  • TVIW 2018

Download Issue 24 View Announcement

This issue, The MEMBERSHIP Edition, features –

• Implications of the Gaia Mission for Future Interstellar Travel
• News Feature – What is Oumuamua?
• Book Review: The Planet Factory – Elizabeth Tasker
• Engineering New Worlds: Goals, Motives and Results
• Interstellar News
• News Features:
  • 69th International Astronautical Congress 2018 – The Interstellar Papers
  • Starship Engineering – First Five Day i4is Summer School
  • Holographic Photon Sails – A Merger of Science and Art
  • The Andromeda Probe Model
  • TVIW 2018

Download Issue 23 View Announcement

This issue features –

• To the Stars in a Century: Z-Pinch fusion & Firefly Icarus
• IAC 2018 Bremen – interstellar & i4is
• Breakthrough Propulsion Physics
• Book Review: Exoplanètes
• Interstellar News
• News Features
  • Moon, Mars & beyond – an RI debate
  • Catching A Little Bit of Heaven
  • i4is HQ Symposium & Lecture
  • Wormholes & Time Machines
  • How far have we come?

Download Issue 22 View Announcement

This issue features –

• “Slow down!”: How to park an interstellar rocket
• The Orbits of Seveneves (2) – the orbits explained
• Imagining Interstellar – Art by Efflam Mercier
• 69th International Astronautical Congress 2018 – Papers by the i4is Team
• BOOK REVIEWS:
  • Going Interstellar – Build Starships Now!
  • Rendezvous with Rama, a retrospective
• NEWS FEATURES –
  • Breakthrough Discuss 2018: i4is debate novel propulsion technologies
  • PROCSIMA – Diffractionless Beamed Propulsion for Breakthrough Interstellar Missions
  • BIS report on nanosats from the UK
• Interstellar News & Project Lyra Update

Download Issue 21 View Announcement

This issue features –

• Project Lyra : mission to ʻOumuamua
• Preparing for the next Interstellar Object
• Interstellar News
• The Orbits of Seveneves
• Tsiolkovsky – Interstellar Pioneer
• NEWS FEATURES
  • Work on the interstellar asteroid and i4is Project Lyra
  • Pete Worden, Breakthrough Initiatives, at i4is HQ
• Sir Arthur C Clarke Centenary
• Models and art at the Mill

Download Issue 20 View Announcement

This issue features –

• ‘The Interstellar Space’ Opening of i4is HQ, 8 October 2017
• News Feature – Glowworm Update
• TV Programme Review – The Search for a New Earth – With Professor Stephen Hawking, BBC2, first screened 11 Sep 2017, UK
• Interstellar Inspiration for School Students: The i4is Interstellar Challenge. How To to get started on your own Interstellar Challenge.
• Transplutonium is not “Planet X” : Reminiscing and reality-based ruminations on the high cost of nucleosynthesis of propellants for interstellar travel.
• Engineering New Worlds: Creating the Future – Parts 4 and 5
• Art for Interstellar : Bringing art, technology and science together in New York

Download Issue 19 View Announcement

This issue features –

• Aridopolis : A Sustainable Earth / Mars Desert Settlement
• Interstellar News
• Engineering New Worlds: Creating the Future – Part 3
• Foundations of Interstellar Studies Workshop
• Statement of Solidarity for The Interstellar Vision
• Opening of the i4is HQ

Download Issue 18 View Announcement

This issue features –

• Advanced Ion Propulsion Systems for Interstellar Precursor Probes
• Interstellar News
• News Feature: TRAPPIST-1
• Is the Alcubierre Drive the answer to Interstellar Travel?
• Album Review: Infinity of Space
• Book Review: Starlight, Starbright: Are Stars Conscious?
• Engineering New Worlds: Creating the Future
• Poster Feature: Space Resource Law

Download Issue 17 View Announcement

This issue features –

• Project Starshot
• Interstellar News
• Letter to the Editor : Stephen Ashworth
• ISU Masters Degree Projects – the i4is contribution
• Film Reviews: Arrival and Passengers
• Book Review: Star Ark : A Living Self-sustaining Spaceship
• Interstellar Challenge for London Schools 2016
• Image Feature: Artificial Intelligence Probes for Interstellar Exploration and Colonization

Download Issue 16 View Announcement

This issue features –

• Guest introduction by Nick Kanas, The Psychology and Sociology of Interstellar Travel
• News from the Initiative
• i4is/ISU 2016: Space Environment & Spacecraft Systems Engineering
• Daedalus: Model and Art
• The Andromeda Study
• Book Review: Gypsy: Carter Scholz
• The art and imagination of David A Hardy

Download Issue 15 View Announcement

This issue features –

• Guest introduction by Paul Gilster
• News from the initiative
• Cosmos: A Personal Voyage
• The BIS Daedalus Model – the last lap
• The Starship Engineer Course 2015
• Interstellar Studies at the ISU 2016

Download Issue 14 View Announcement

This issue features –

• Guest introduction by Kieran Twaites
• News from the initiative
• The 1,000 Year Starship
• Sending Ourselves to the stars? – 2
• Photo Feature: BIS Daedalus Starship Model
• Project Icarus: Introduction

Download Issue 13 View Announcement

This issue features –

• Guest Introduction
• News from the initiative
• Sending Ourselves to the Stars
• Starship Engineer
• Prototyping Starships
• Dragonfly: The Way Forward
• Film Review: Star Wars – The Force Awakens

Download Issue 12 View Announcement

This issue features –

• Stop Press: Starship Engineer Course
• Guest Introduction: Photometric SETI
• News: Project Dragonfly, i4is at SDSO, Axiom, Starship Congress
• Project Dragonfly Competition
• Interstellar Implications of the New Horizons Probe
• Starship Congress 2015
• TWIW 2014: i4is SF design Workshop
• TWIW 2014: Field Report
• What we did at Eastercon
• Film Review: The Martian

Download Issue 11 View Announcement

This issue features –

• News, Dragonfly, Pluto and Dysprosium
• Wormholes Come to London (2)
• Wormholes – Stargates to the Cosmic Neighbourhood
• i4is Goes Stratospheric
• Icarus Interstellar: Project Voyager
• What we did at the WorldCon (2)
• How do we Survive on a Distant World?
• What’s in Principium 11

Download Issue 10 View Announcement

This issue features –

• Project Dragonfly
• Kickstarter
• Introduction
• Beyond the Boundary – An i4is Book
• Educational Academy
• Technical Research Committee
• i4is and ISU
• Wormholes Come to London
• Film & Book Review “Interstellar”
• Merchandise
• News from the i4is
• What we did at the WorldCon
• What’s in Principium 10

Download Issue 9 View Announcement

This issue features –

• Introduction by Kelvin F. Long
• News from the Initiative
• Advances
• Community News
• Son of Daedalus
• Building Daedalus
• Book Review

Download Issue 8 View Announcement

This issue features –

• Introduction by Sarah Margree
• News from the initiative
• Voyager 1 Leaves the Heliosphere
• The New Horizons Message Initiative
• Project Icarus Workshop
• The Alpha Centauri Prize
• Starship Cities
• Enzmann Starships

Download Issue 7 View Announcement

This issue features –

• Introduction by Keith Cooper
• A Year I the Life of i4is
• Why an initiative now?
• The i4is Academy
• Gravity and the Apple
• The Origins of Future Worlds
• The Philosophy of the Starship
• Project Dragonfly

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This issue features –

• Introduction by Keith Cooper
• News from the initiative
• Community
• Advances
• The Art of Music
• Jon Lomberg’s Starship Adventures
• Retrospective: SETI

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This issue features –

• Introduction by Adrian Mann
• News from the initiative
• Tennessee Valley Interstellar Workshop
• Advances – DE-STAR
• The Starship Art of Jon Lomberg
• Book Review

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This issue features –

• Introduction by Gregory Matloff
• Advances – Asteroid Propecting
• Advances – Skylon
• ‘Listening Post’
• A Learning Experience
• Retrospective: Bussard Ramjet
• Reviews

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This issue features –

• Letter from Rob Swinney
• News from the initiative
• ‘Advances’
• Meet the Neighbours
• Retrospective: Voyager
• Reviews

Download Issue 2 View Announcement

This issue features –

• Letter from the Director
• News from the initiative
• ‘Advances’
• CubeSats
• Retrospective: Daedalus
• Book Reviews

Download Issue 1 View Announcement