In this episode of Space Minds, host Mike Gruss speaks with Professor Sir Martin Sweeting, Executive Chairman of Surrey Satellite Technology Limited and a professor at the Surrey Space Institute of the University of Surrey.
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ULA’s new rocket will fly to GEO an $250 million military experiment that could shape GPS modernization
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Belgian startup Edgx has raised seed funding to develop Sterna, an artificial intelligence computer designed to run complex algorithms onboard satellites to speed decisions and use limited bandwidth more efficiently.
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Employee-owned defense technology company demonstrates mission-focused edge processing capabilities for warfighter applications.
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SALT LAKE CITY – Ascending Node Technologies has added a constellation-design tool to its Spaceline mission-planning software. “Not only is this useful for new constellations, but also for satellite operators adding instruments or increasing the size of their constellations,” John Kidd, ANT chief aerospace engineer, told SpaceNews. In addition, ANT is “testing optimization algorithms to […]
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08/11/2025, Salt Lake City, UT – The cooperation, announced during the Small Satellite Conference in Utah, addresses the growing demand for advanced onboard applications among SmallSat developers. The cooperation brings […]
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Geopolitical shifts are unlocking new business for European smallsat firms, but they’re also creating a new set of headaches – especially around tariffs. European governments are planning to sharply increase their defense budgets in the next several years as part of a pledge made by NATO members at a June summit meeting to go from […]
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Evidence of the coherent elastic scattering of reactor antineutrinos from atomic nuclei has been reported by the German-Swiss Coherent Neutrino Nucleus Scattering (CONUS) collaboration. This interaction has a higher cross section (probability) than the processes currently used to detect neutrinos, and could therefore lead to smaller detectors. It also involves lower-energy neutrinos, which could offer new ways to look for new physics beyond the Standard Model.
Antineutrinos only occasionally interact with matter, which makes them very difficult to detect. They can be observed using inverse beta decay, which involves the capture of electron antineutrinos by protons, producing neutrons and positrons. An alternative method involves observing the scattering of antineutrinos from electrons. Both these reactions have small cross sections, so huge detectors are required to capture just a few events. Moreover, inverse beta decay can only detect antineutrinos if they have energies above about 1.8 MeV, which precludes searches for low-energy physics beyond the Standard Model.
It is also possible to detect neutrinos by the tiny kick a nucleus receives when a neutrino scatters off it. “It’s very hard to detect experimentally because the recoil energy of the nucleus is so low, but on the other hand the interaction probability is a factor of 100–1000 higher than these typical reactions that are otherwise used,” says Christian Buck of the Max Planck Institute for Nuclear Physics in Heidelberg. This enables measurements with kilogram-scale detectors.
This was first observed in 2017 by the COHERENT collaboration using a 14.6 kg caesium iodide crystal to detect neutrinos from the Spallation Neutron Source at the Oak Ridge National Laboratory in the US. These neutrinos have a maximum energy of 55 MeV, making them ideal for the interaction. Moreover, the neutrinos come in pulses, allowing the signal to be distinguished from background radiation.
Multiple groups have subsequently looked for signals from nuclear reactors, which produce lower-energy neutrinos. These include the CONUS collaboration, which operated at the Brokdorf nuclear reactor in Germany until 2022. However, the only group to report a strong hint of a signal included Juan Collar of the University of Chicago. In 2022 it published results suggesting a stronger than expected signal at the Dresden-2 power reactor in the US.
Now, Buck and his CONUS colleagues present data from the CONUS+ experiment conducted at the Leibstadt reactor in Switzerland. They used three 1 kg germanium diodes sensitive to energies as low as 160 eV. They extracted the neutrino spectrum from background radiation by taking data when the reactor was running and when it was not. Writing in Nature, the team conclude that 395±106 neutrinos had been detected during 119 days of operation, which is consistent with the Standard Model 3.7σ away from zero. The experiment is currently in its second run, with the detector masses increased to 2.4 kg to provide better statistics and potentially a lower threshold energy.
Collar, however, is sceptical of the result. “[The researchers] seem to have an interest in dismissing the limitations of these detectors – limitations that affect us too,” he says. “The main difference between our approach and theirs is that we have made a best effort to demonstrate that our data are not contaminated by residual sources of low-energy noise dominant in this type of device prior to a careful analysis.” His group will soon release data taken at the Vandellòs reactor in Spain. “When we release these, we will take the time to point out the issues visible in their present paper,” he says. “It is a long list.”
Buck accepts that, if the previous measurements by Collar’s group are correct, the CONUS+ researchers should have detected least 10 times more neutrinos than they actually did. “I would say the control of backgrounds at our site in Leibstadt is better because we do not have such a strong neutron background. We have clearly demonstrated that the noise Collar has in mind is not dominant in the energy region of interest in our case.”
Patrick Huber at Virginia Tech in the US says, “Let’s see what Collar’s new result is going to be. I think this is a good example of the scientific method at work. Science doesn’t care who’s first – scientists care, but for us, what matters is that we get it right. But with the data that we have in hand, most experts, myself included, think that the current result is essentially the result we have been looking for.”
The post Elusive scattering of antineutrinos from nuclei spotted using small detector appeared first on Physics World.
MMA Space Reveals FlexArray Solar Array System at SmallSatellite Conference in Salt Lake City Utah
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LAFAYETTE, Colo. (August 4, 2025) — Blue Canyon Technologies, small satellite manufacturer and mission services provider for RTX (NYSE: RTX), has unveiled its latest spacecraft bus, the Saturn-400. This new, […]
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Booz Allen Hamilton’s venture capital arm is seeking to ramp up space investments after tripling its funding pool to $300 million.
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Virginia-based startup aims to speed up satellite data processing with onboard AI capabilities
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SALT LAKE CITY – Kongsberg Satellite Services announced plans Aug. 11 to extend its ground-based communications network into space. Hyper satellites, currently being developed, will be added to KSAT’s communications infrastructure to reduce latency for time-sensitive data. “Hyper combines the best of both worlds, space and ground, into a single integrated service,” Edvard Foss, KSAT […]
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PHOENIX, Ariz. (August 7, 2025) – Spirit Electronics is proud to announce the addition of Vicor Corporation to its curated portfolio of products and services developed especially to support the […]
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SALT LAKE CITY — French satellite antenna manufacturer Anywaves is continuing to expand internationally with Anywaves US, led by general manager Nicolas Hine. Hine, the former Mangata Networks vice president of global strategy who joined Anywaves in June, is evaluating potential sites for Anywaves US offices and, eventually, manufacturing facilities. Anywaves, established in Toulouse in […]
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LeoLabs signed a NASA Space Act Agreement for flight safety data integration and coordination
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The company will sell satellite components to the broader space industry
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