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<\/p>\nWhen the SpIRIT CubeSat rode into orbit on a SpaceX Falcon 9 in December 2023, it carried a very massive passenger along. Cramped inside the shoebox-sized satellite is the HERMES detector, an instrument built by the Italian Space Agency that can capture incoming particles from some of the universe\u2019s most energetic occurrences. No bigger than a box of tissues, yet this tiny device can measure X-rays and gamma rays from distant, violent explosions.<\/p>\n
A Little Instrument with Much Ability<\/p>\n
One of the many features that distinguish HERMES is the quantity of technology that is crammed into such a small instrument. It employs silicon drift detectors to identify soft X-rays, as well as scintillating crystals that radiate light when they are struck by more energetic gamma rays. This allows the instrument to identify signals that range from a few thousand electron volts up to two million.<\/p>\n
In spite of this wide range, the instrument weighs only about a kilogram and a half, consumes only two watts of electricity, and can measure the arrival of the cosmic bursts to within a millionth of a second.<\/p>\n
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The groundbreaking Australian-made Space Industry Responsive Intelligent Thermal (SpIRIT) nanosatellite. (CREDIT: Australian Space Agency)<\/p>\n
That accuracy in timing is crucial because SpIRIT is not moving on its own. It is part of a fleet of satellites carrying HERMES detectors aboard. By observing when bursts arrive at each satellite, astronomers will be able to pinpoint the source of these cosmic fireworks.<\/p>\n
A Milestone for Australian Space Efforts<\/p>\n
For Australia, SpIRIT is a landmark. It is the first Australian Space Agency<\/a>-funded space telescope to host another country\u2019s main science payload. Conceived and led by the University of Melbourne, the nanosatellite showcases Australia\u2019s growing contribution to international space science.<\/p>\n Since it went into orbit, SpIRIT has completed over 9,000 orbits, a distance equivalent to one round trip to Mars and back. Now, after several months of careful testing, it has successfully gone through its commissioning phase and is now ready to begin its primary science mission.<\/p>\n The mission\u2019s lead investigator at the University of Melbourne<\/a>, Professor Michele Trenti, called the achievement a milestone. \u201cSpIRIT is an advanced satellite designed and constructed in Australia, with many of its components on their first-ever flights and delivering an Italian Space Agency-provided scientific instrument,\u201d Trenti explained. \u201cNow that SpIRIT has been successfully tested in space, we think it\u2019s good to go for the next stage of its mission, which is a real thrill.\u201d.<\/p>\n The first image taken by the SpIRIT selfie camera, acquired over New Zealand at the end of the thermal radiator deployment sequence. The camera captures the underside of SpIRIT satellite, where mission participant logos are printed. (CREDIT: University of Melbourne)<\/p>\n Pursuing Cosmic Blasts<\/p>\n Detecting gamma-ray bursts, rare outbursts of high-energy light that burst forth when stars disintegrate or crash, is at the heart of SpIRIT\u2019s quest. Such blasts are unpredictable and extremely luminous, briefly shining brighter than entire galaxies at times. Since they last only brief seconds, finding one in progress can be looking for a needle in a haystack.<\/p>\n SpIRIT would be an early warning facility component, alerting astronomers on such an occurrence. Operating together with other satellites and ground-based observatories, it would allow scientists to act quickly to study these astrophysical outbursts before they vanish.<\/p>\n In its first real test, the HERMES detector learned on the Crab gamma pulsar<\/a>, a well-known cosmic beacon, and found its signal in just 700 seconds of exposure. That achievement certified the instrument and demonstrated that it could return valuable data.<\/p>\n A Satellite with Personality<\/p>\n Beyond its scientific potential, SpIRIT has already shown some pizzazz. As part of its first deployment, the spacecraft ejected its specially designed winged thermal management system built by the University of Melbourne. The wings are for temperature control and to boost science performance.<\/p>\n SpIRIT\u2019s radiators after deployment, flying high over the Indian Ocean. The \u201cEagle\u201d, a copper structure on the right radiator can be seen, which is designed to help dissipate heat from SpIRIT\u2019s thermal management system. (CREDIT: University of Melbourne)<\/p>\n With them, a small \u201cselfie stick\u201d extended to capture an image of the nanosatellite in space, adorned with the badges of the international partners that made the mission possible. When completely unfurled, the satellite<\/a> is nearly a meter wide.<\/p>\n Australian Space Agency chief Enrico Palermo congratulated the achievement. \u201cThe SpIRIT mission has demonstrated the potential within the Australian space sector \u2013 from building the satellite and testing new technologies in orbit and on the ground, to hosting international science payloads and successfully concluding its first phase,\u201d he stated.<\/p>\n An International Collaboration<\/p>\n International cooperation is at the heart of the mission. Teodoro Valente, president of Italian Space Agency<\/a>, said the mission is a reflection of technological excellence and strategic value of cooperation. \u201cThe SpIRIT satellite carries on board a prototype detector sponsored by ASI, designed entirely in Italy under the technical guidance of INAF,\u201d Valente said. \u201cThe nominal operation of this reduced-size instrument\u2026has been demonstrated by pointing toward the Crab gamma pulsar.\u201d<\/p>\n By combining Australian creativity with Italian machinery, SpIRIT demonstrates how nations can share their abilities to chart the universe better than they can do alone.<\/p>\n Practical Implications of the SpIRIT mission<\/p>\n The SpIRIT mission demonstrates that inexpensive, small satellites can achieve great scientific goals. If successful, its fleet-based approach to viewing space could transform how astronomers track violent cosmic events. Instead of depending on vast, expensive observatories, researchers might one day rely on networks of small satellites working together.<\/p>\n That shift might make it possible to receive faster alerts of gamma-ray bursts, allowing astronomers to capture precious data on black holes<\/a>, neutron star mergers, and expiring superstars.<\/p>\n For Australia, the mission consolidates its growing reputation as a valued player in global space exploration. To people, it offers a new way of witnessing the universe\u2019s most violent occurrences happening in real-time.<\/p>\n Related Stories<\/p>\n![\"The](\"https:\/\/www.newsbeep.com\/ca\/wp-content\/uploads\/2025\/09\/93d7c86903dace6f7fd472829b4cb5e9.jpeg\"\/)
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