BEGIN:VCALENDAR VERSION:2.0 PRODID:-//jEvents 2.0 for Joomla//EN CALSCALE:GREGORIAN METHOD:PUBLISH BEGIN:VTIMEZONE TZID:Australia/Sydney BEGIN:STANDARD DTSTART:20250902T193000 RDATE:20251005T030000 TZOFFSETFROM:+1100 TZOFFSETTO:+1000 TZNAME:Australia/Sydney AEST END:STANDARD BEGIN:STANDARD DTSTART:20260405T020000 RDATE:20261004T030000 TZOFFSETFROM:+1100 TZOFFSETTO:+1000 TZNAME:Australia/Sydney AEST END:STANDARD BEGIN:STANDARD DTSTART:20270404T020000 RDATE:20271003T030000 TZOFFSETFROM:+1100 TZOFFSETTO:+1000 TZNAME:Australia/Sydney AEST END:STANDARD BEGIN:STANDARD DTSTART:20280402T020000 RDATE:20281001T030000 TZOFFSETFROM:+1100 TZOFFSETTO:+1000 TZNAME:Australia/Sydney AEST END:STANDARD BEGIN:DAYLIGHT DTSTART:20251005T030000 RDATE:20260405T020000 TZOFFSETFROM:+1000 TZOFFSETTO:+1100 TZNAME:Australia/Sydney AEDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20261004T030000 RDATE:20270404T020000 TZOFFSETFROM:+1000 TZOFFSETTO:+1100 TZNAME:Australia/Sydney AEDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20271003T030000 RDATE:20280402T020000 TZOFFSETFROM:+1000 TZOFFSETTO:+1100 TZNAME:Australia/Sydney AEDT END:DAYLIGHT BEGIN:DAYLIGHT DTSTART:20281001T030000 RDATE:20290401T020000 TZOFFSETFROM:+1000 TZOFFSETTO:+1100 TZNAME:Australia/Sydney AEDT END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT UID:25a7b0db9bc886fb585863cb7e61fdf9 CATEGORIES:Guest Speaker Night CREATED:20251122T112136 SUMMARY:Guest Speaker - Lachlan Goulden - University of Sydney LOCATION:Green Point Observatory DESCRIPTION:Plasmas in Space and Electric SailsMore than 99% of all the matter in the u niverse is in the fourth state of matter called plasma. From the stars them selves to the matter between planets, stars and galaxies it is almost entir ely plasma. This talk will (hopefully) demystify plasmas from their presenc e and applications on Earth to their abundance and uses in space. Also feat ured will be some of the work Lachlan is doing on Electric Sails, a spacecr aft propulsion method powered by plasmas in space.\nLachlan GouldenLachlan Goulden is a current Physics PhD student at the University of Sydney. His r esearch is focused on a unique spacecraft propulsion method called Electric sails. His supervisors are Professor Iver Cains the Director of CUAVA (htt ps://www.cuava.com.au/) (Centre for CubeSats, UAVs and their Applications) and Associate Professor Joe Khachan.\nLachlan was awarded a Bachelor of Sci ence (Physics) at the University of Wollongong and then completed his Bache lor of Science (Honours) (Physics) in 2020 at the University of Sydney. His honours thesis was on modelling electrodynamic tethers for CubeSat propuls ion.\nAfter graduating, he worked in a photonics lab at the Sydney Nanoscie nce Hub (SNH) as part of the Eggleton Research Group working toward a PhD. While there he was awarded the 2022 IEEE Photonics Conference best student paper finalist on his work demonstrating quasi-light storage in a photonic chip.\nHe eventually decided to instead pursue his current PhD which is mor e in line with his interests with space and spacecraft propulsion. His pape r ‘Measurements of the force produced by a negatively charged electric sail in a pulsed cathodic arc plasma (https://pubs.aip.org/aip/pop/article/32/6 /063511/3350591/Measurements-of-the-force-produced-by-a-negatively)’ was se lected as a featured article in the Journal Physics of Plasmas and had an A merican Institute of Physics (AIP) Scilight article (https://pubs.aip.org/a ip/sci/article/2025/25/251107/3350520/Electric-sails-prove-promising-for-pr opellant-less) about the paper.\nLachlan has been a member of SASI since he was five years old, this sparked a lifelong interest in astronomy, space a nd physics in general.\n X-ALT-DESC;FMTTYPE=text/html:

Plasmas in Space and Electric Sails

More than 99% of all the mat ter in the universe is in the fourth state of matter called plasma. From th e stars themselves to the matter between planets, stars and galaxies it is almost entirely plasma. This talk will (hopefully) demystify plasmas from t heir presence and applications on Earth to their abundance and uses in spac e. Also featured will be some of the work Lachlan is doing on Electric Sail s, a spacecraft propulsion method powered by plasmas in space.

CUAVA P hD Lachlan GouldenLachlan Goulden

Lachlan Goulden is a current Physics Ph D student at the University of Sydney. His research is focused on a unique spacecraft propulsion method called Electric sails. His supervisors are Pro fessor Iver Cains the Director of CUAVA (Centre for CubeSats, UAVs and their Applications) and Associate Profe ssor Joe Khachan.

Lachlan was awarded a Bachelor of Science (Physics) at the University of Wollongong and then completed his Bachelor of Science (Honours) (Physics) in 2020 at the University of Sydney. His honours thesi s was on modelling electrodynamic tethers for CubeSat propulsion.

Aft er graduating, he worked in a photonics lab at the Sydney Nanoscience Hub ( SNH) as part of the Eggleton Research Group working toward a PhD. While the re he was awarded the 2022 IEEE Photonics Conference best student paper fin alist on his work demonstrating quasi-light storage in a photonic chip.

He eventually decided to instead pursue his current PhD which is more in line with his interests with space and spacecraft propulsion. His paper ‘< a href="https://pubs.aip.org/aip/pop/article/32/6/063511/3350591/Measuremen ts-of-the-force-produced-by-a-negatively">Measurements of the force produce d by a negatively charged electric sail in a pulsed cathodic arc plasma ’ was selected as a featured article in the Journal Physics of Plasmas and had an American Institute of Physics (AIP) Scilight article about the paper.

Lachlan has been a member of SASI since he was five years old, this sparked a lifelong inter est in astronomy, space and physics in general.

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