About SpIRIT
The SpIRIT (Space Industry – Responsive – Intelligent – Thermal) nano-satellite is an Australia-Italy mission supported in Australia by the Australian Space Agency. (Moon to Mars Initiatve: Demonstrator Mission, and previously ISI – Expand Capability).
SpIRIT is growing Australian space industry capabilities through the operations (and previously, the development) of an innovative nano-satellite which continues to break new ground in high-performance autonomous operations, communications, propulsion and thermal management.
SpIRIT is the first made-in-Australia spacecraft to host a foreign space agency’s scientific instrument as its main payload, showcasing the competitiveness of Australia’s space industry, and growing international cooperation in astronomy and space science with the Italian Space Agency.
The SpIRIT design is based on a standard format (6U CubeSat) with ∼ 11.5 kg mass and linear dimensions of approximately 30 × 20 × 10 cm when it was stowed in its launch dispenser, now that it has unfurled all of its deployable structures, it stretches to almost one meter.
The continued SpIRIT operations demonstrates the long-term performance of Australian-made hardware in-orbit. SpIRIT has been operating since December 2023 and will only cease due to the natural de-orbiting in mid 2027.
- An Australian-designed and made spacecraft platform (Apogee satellite bus by Inovor Technologies).
- One main science payload for advanced gamma and x-ray remote sensing – the HERMES instrument, developed with funding by the Italian Space Agency (HERMES Technological Pathfinder) and by the European Commission H2020 framework (HERMES Scientific Pathfinder).
- Innovative made-in-Australia products, including:
- The University of Melbourne Thermal Management Integrated System (TheMIS) for precision temperature control of sensitive instrumentation
- The University of Melbourne LORIS imaging and AI system for spacecraft inspection, earth-observation and edge-computing.
- The University of Melbourne Payload Management System, designed to facilitate integration of complex instrumentation in off-the-shelf satellite platforms, and to reliably control their operations and carry out advanced data processing on-board
- The University of Melbourne Mercury module for adaptive autonomous low-latency communications
- The Neumann Space Thruster, a novel high efficiency electric propulsion solution ideally suited for applications in Lunar orbit and beyond Earth
- Demonstration of an efficient ground segment capable of receiving operations requests, applying user priority levels, and making complex decisions about tasking of multi-band and multi-network satellite communications, opening new opportunities for rapid satellite re-tasking and data dissemination
SpIRIT represents a “first-in-space” for all key Australian stakeholders: The Australian Space Agency funded construction in 2020 as its first mission. Industry partners Inovor Technologies and Neumann Space operated their hardware in orbit for the first time. The University of Melbourne is leading its first international cooperative project and is also operating its own payloads in-orbit for the first time.
- Images from Space

SpIRIT’s deployed radiators over the Indian Ocean; Left 24th August 2025 05:26:30 UTC Right 24th August 2025 05:26:30 UTC 
Single SpIRIT radiator deployed over Madagascar; 23rd Aug 2025 05:59:21 UTC 
1st SpIRIT selfie over New Zealand; 13th July 2025 21:58:28 
Earth limb over Central Australia; 17th May 2025 00:52:10 UTC 
Earth limb over the Indian Ocean; 2nd May 2025 12:23:31 UTC 
Lake Kati Thanda showing floodwaters flowing in; 19th April 2025 12:39:44 UTC 
Looking West over Victoria, with Tasmania on the left side; 10th March 2025 23:22:32 UTC 
Sunset over Antarctica 22nd Feb 2025 18:13:49 UTC 
Night-time over India 
Looking south over New South Wales; 8th February 2025 23:59:56 UTC 
Earth limb above terminator overlooking Antarctica; 22nd January 2025 19:54:49 UTC 
Moon Rise with SpIRIT’s stowed radiator over the Indian Ocean; 23rd August 2024 03:31:09 UTC 
Uluru in Central Australia; 17th May 2024 00:54:11 UTC 
Geographic features of Central Australia (annotated); 17th May 2024 00:54:11 UTC 
Straight of Gibraltar prior to the Loris camera deployment; 4th May 2024 10:42:24 UTC 
RGB image of Black Sea coastline acquired from SpIRIT on 31st March 2024, 09:09 UTC. The image was captured by Loris camera 5 while the satellite was orbiting above the Adriatic Sea. The image covers a region of approximately 600km along the horizontal direction and shows part of the Earth limb as well in the bottom right corner. The native 8M pixel resolution was compressed to just over 60kb used to downlink the image shown thanks to the progressive JPEG-XL algorithm implemented by Loris. Image credits and copyright: University of Melbourne – Melbourne Space Laboratory.
- Development Images

Comparison of SpIRIT’s selfie from space with a mockup on a prototype model. 
SpIRIT being loaded into its deployer before launch into orbit. 
Packing SpIRIT for transporation to the Netherlands. 
MSL team with fully-assembled SpIRIT 
Visible and IR comparison of SpIRIT deployable radiators 1 
Visible and IR comparison of SpIRIT deployable radiators 1 
SpIRIT locked and loaded for vibration testing 
SpIRIT under test in the TVAC chamber 
SpIRIT ready for TVAC 
SpIRIT undergoing instrumentation in the TVAC chamber 
SpIRIT prior to TVAC testing 
SpIRIT prior to TVAC testing 
Wombat XL Thermal Vacuum chamber 
A fully integrated SpIRIT under software test 
Flight payloads and platform under integration at Inovor Technologies 
All payloads installed onto the integration jig. 
MSL payloads and HERMES installed onto the Integration jig 
Custom thermal blanket for the SpIRIT cryocooler tip. 
Partial integration of payloads into test structure 
SpIRIT’s cryocooler ready to be clamped in place. 
LORIS deployable camera slide assembly. 
Flight Model of HERMES X-ray Detector flying on SpIRIT, pictured with UoM thermal radiators, multi-layer-insulation and light shields (Image credit: HERMES and Melbourne Space Laboratory, UoM) 
MSL staff and HERMES team members at handover of the HERMES instrument 
TheMIS radiators deployed 
TheMIS deployable radiator stack 
Payload integration testing between the PMS and the HERMES instrument 
SpIRIT’s Integrated Payload Management System (PMS) 
MSL and Neumann staff testing integration of the Neumann Thruster at Neumann Space. 
Engineering model of the Neumann Thruster firing. 
Prototype structure 
SPIRIT Preliminary Design Review
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AI over the Arctic
Flying over the Arctic, SpIRIT captured this image of a snowy white wonderland below. SpIRIT’s high inclination orbit gives the satellite a prime view of the Antarctic and Arctic polar ice caps that can be captured and processed by the imaging system we have developed. These regions of low contrast provide a nice challenge for the classification algorithms running on …
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A Universal Sunrise
Have you ever wondered why the surface of the Moon glows a vibrant red colour during a lunar eclipse? It may be reminiscent of the colour of a sunset - and that’s because they arise from the same phenomena. A lunar eclipse is the collective sunrises and sunsets from around the entire world, projected onto the Moon’s surface, when positioned …
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Selfies from space
We are thrilled to celebrate the successful commissioning of SpIRIT with a set of selfies from space. Fig 1: SpIRIT "selfie" acquired following deployment of the thermal radiators and camera arm on 14 July 2025 over New Zealand/Tasman Sea. The underside of the satellite is in the field of view. https://www.unimelb.edu.au/newsroom/news/2025/september/selfies-from-space-aussie-nanosatellite-completes-first-phase-of-mission
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Flying with (thermal) wings wide open
SpIRIT has been in orbit for 650+ days, and recently we reached its final flight configuration with the thermal radiators wide open. Everything is looking great on the satellite with its (thermal) wings open. The HERMES gamma/x-ray telescope is quite close to its optimal temperature range thanks to passive cooling only, and our Stirling cycle cryocooler is operating nominally both …
