Science and Enabling Technologies to Explore the Interstellar Medium - Part II

January 13-15, 2015
California Institute of Technology - Pasadena, CA 91125

Ed Stone

Ed Stone

California Institute of Technology

Leon Alkalai

Leon Alkalai

Jet Propulsion Laboratory

Louis Friedman

Louis Friedman

Planetary Society

Workshop Overview:

Recent discoveries reported in 2012 and 2013 by Voyager-1 and Kepler have brought into focus two end-points of what is now commonly referred to as the Interstellar Medium (ISM). Whereas Voyager-1 is beginning to explore the ISM in-situ, the Kepler space-based telescope and other Earth-based telescopes have detected a plethora of potentially Earth-like planetary systems around other stars or "exoplanets". The results of these two missions frame the context for further intellectual curiosity, scientific questions, and exploration goals that will define objectives for innovative and far-reaching missions heading out of our solar system and someday reaching for the stars.

The goals of the workshop are to: articulate key scientific questions; identify near-term science exploration goals; derive mission objectives and preliminary design concepts that can be realized in the next two decades; derive flight system and science measurement requirement; assess key mission, system, and operations technology drivers; develop a technology maturation plan that will be proposed to KISS and JPL for follow-on funding.

The technical challenge and the focus of the workshop is to assess mission implementation techniques that will enable affordable robotic probes to reach the ISM within 10 years with velocities up to 10 times faster than Voyager, and be designed to last 50 years or longer. By comparison, Voyager-1 is now traveling at a speed of 17 km/sec, and has taken 35 years to reach the ISM. Meeting this challenge would constitute a revolutionary capability that would enable multiple scientific probes to launch and return initial scientific results of and from the ISM within a decade, and continue for several decades.

Workshop Participants:

  • Leon Alkalai - JPL/Caltech
  • Nitin Arora -JPL/Caltech
  • Manan Arya - Caltech Campus
  • Nathan Barnes - L. Garde Inc.
  • Travis Brashears - UC Santa Barbara
  • Mike Brown - Caltech Campus
  • Paul Wilson Cauley - Wesleyan University
  • Bob Cesarone - JPL/Caltech
  • Louis Friedman - The Planetary Society
  • Paul Goldsmith - JPL/Caltech
  • Mae Jemison - 100 Year Starship
  • Les Johnson - NASA George C. Marshall Space Flight Center
  • Paulett Liewer - JPL/Caltech
  • Philip Lubin - UC Santa Barbara
  • Claudio Maccone - International Academy of Astronautics and Istituto Nazionale di Astrofisica
  • Jared Males - University of Arizona
  • Kyle McDonough - UC Santa Barbara
  • Ralph McNutt - Johns Hopkins University Applied Physics Laboratory
  • Richard Mewaldt - Caltech Campus
  • Adam Michael - Boston University
  • Edward Montgomery - Space and Missile Defense Command
  • Merav Opher - Boston University
  • Elena Provornikova - Catholic University of America
  • Jamie Rankin - Caltech Campus
  • Seth Redfield - Wesleyan University
  • Michael Shao - JPL/Caltech
  • Robert Shotwell - JPL/Caltech
  • Ed Stone - Caltech Campus
  • Thomas Svitek - Stellar Exploration, Inc.
  • Mark Swain - JPL/Caltech
  • Slava Turyshev - JPL/Caltech
  • Michael Werner JPL/Caltech

Lodging for out-of-town attendees

There are a number of hotels (6 page pdf, 56KB) that are close to the Caltech campus where we have a negotiated rate. (Please note that this negotiated rate does not guarantee you the lowest rate as there may be internet specials or AAA rates that may be better.)

Please note that with enough notice, you can reserve rooms for attendees at the Athenaeum, which has been recognized as a Platinum Club of America. Newly refurbished, it is conveniently located on the Caltech Campus. Contact Janet Seid if you would like to check the availability of this option.

Visa Requirements

For Visa requirement information and travel to the United States please visit the website of the U.S. Department of State.

Parking (for Visitors and for JPL Personnel)

For Visitors: From the Arroyo Parkway, turn right (east) on Del Mar Avenue. Proceed approximately one and a quarter miles. The Caltech campus will be on your right. Turn right (south) onto Michigan Avenue. Turn right into the outdoor parking lot and park in an unmarked spot. Buy a parking permit from the kiosks near the middle of the lot or request one ahead of time from KISS.

For JPL Personnel: JPLers may use their JPL hang tag for parking or request a special parking hangtag from the JPL parking office. Employees who do not have on-Lab parking privileges can obtain a hang tag created for this purpose from JPL parking coordinator Robert Kennedy (818-354-4586, Building 310-108B, 9/80 schedule). Please park in the outdoor parking lot located on Michigan Avenue in an unmarked spot.

Maps and General Information on Pasadena

Directions and Maps

Summary of Workshop #1

Leon Alkalai
Ed Stone
Lou Friedman

Post Workshop: Summary of Action Items
(642 KB pdf)
(5.48 MB pptx)

Workshop Presentations

Edward E. (Sandy) Montgomery IV
Private Individual

Beamed Energy Propulsion for Missions to the Interstellar Medium (ISM) Modes and Past Studies
(2 MB pdf)

Louis Friedman
The Planetary Society

Laser Propulsion Demo Consideration
(554 KB pdf)

Les Johnson
NASA George C. Marshall Space Flight Center

Solar Sails for Exploration of the Interstellar Medium
(3.26 MB pdf)

Propulsion Technology Assessment: Science and Enabling Technologies to Explore the Interstellar Medium
(3.39 MB pdf)

Eric Archer

RF Communications for 250 AU Can we do better than Voyager?
(80 KB pdf)

Abhijit Biswas
Meera Srinivasan
Malcolm Wright
Sabino Piazzolla

Interstellar Optical Communications
(1.58 MB pdf)

Michael Werner

Interstellar Probe: Exploiting the Dark Sky
(403 KB pdf)

Manan Arya
Caltech Campus

Cosmic Squid: A Giant Spinning CubeSat Solar Sail
(1.44 MB pdf)

Ralph L. McNutt
Johns Hopkins University Applied Physics Laboratory

Solar Sails and Strength of Materials
(1.98 MB pdf)

Ballistic Mission Trades
(4.35 MB pdf)

Merav Opher
Boston University

Science in the Heliosheath and Heliopause
(6.64 MB pdf)