Orbex received far less funding than the other four ESA European Launcher Challenge companies after the U.K. deferred a decision on funding allocations.
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China could be without emergency launch capability to Tiangong space station for months, leaving no rapid-response option for any new crisis following the Shenzhou-20 incident.
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At next year’s World Radiocommunications Conference (WRC-25), governments will face a choice that goes to the heart of how we monitor our warming planet. Some regulators are wondering whether to […]
The post Mobile networks want to use the satellite airwaves we need to track climate change appeared first on SpaceNews.
Projections for the booming space economy often come with trillion-dollar headlines, but the lion’s share of near-term revenue looks destined for just a handful of massive constellations with the funds to invest in vertical integration. It’s relatively slim pickings for the many other manufacturers, launch providers and technology suppliers hoping to ride the wave. Manufacturing […]
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Researchers in the US have shed new light on the puzzling and complex flight physics of creatures such as hummingbirds, bumblebees and dragonflies that flap their wings to hover in place. According to an interdisciplinary team at the University of Cincinnati, the mechanism these animals deploy can be described by a very simple, computationally basic, stable and natural feedback mechanism that operates in real time. The work could aid the development of hovering robots, including those that could act as artificial pollinators for crops.
If you’ve ever watched a flapping insect or hummingbird hover in place – often while engaged in other activities such as feeding or even mating – you’ll appreciate how remarkable they are. To stay aloft and stable, these animals must constantly sense their position and motion and make corresponding adjustments to their wing flaps.
Biophysicists have previously put forward many highly complex explanations for how they do this, but according to the Cincinnati team of Sameh Eisa and Ahmed Elgohary, some of this complexity is not necessary. Earlier this year, the pair developed their own mathematical and control theory based on a mechanism they call “extremum seeking for vibrational stabilization”.
Eisa describes this mechanism as “very natural” because it relies on just two main components. The first is the wing flapping motion itself, which he says is “naturally built in” for flapping creatures that use it to propel themselves. The second is a simple feedback mechanism involving sensations and measurements related to the altitude at which the creatures aim to stabilize their hovering.
The general principle, he continues, is that a system (in this case an insect or hummingbird) can steer itself towards a stable position by continuously adjusting a high-amplitude, high-frequency input control or signal (in this case, a flapping wing action). “This adjustment is simply based on the feedback of measurement (the insects’ perceptions) and stabilization (hovering) occurs when the system optimizes what it is measuring,” he says.
As well as being relatively easy to describe, Eisa tells Physics World that this mechanism is biologically plausible and computationally basic, dramatically simplifying the physics of hovering. “It is also categorically different from all available results and explanations in the literature for how stable hovering by insects and hummingbirds can be achieved,” he adds.
In the latest study, which is detailed in Physical Review E, the researchers compared their simulation results to reported biological data on a hummingbird and five flapping insects (a bumblebee, a cranefly, a dragonfly, a hawkmoth and a hoverfly). They found that their simulation fit the data very closely. They also ran an experiment on a flapping, light-sensing robot and observed that it behaved like a moth: it elevated itself to the level of the light source and then stabilized its hovering motion.
Eisa says he has always been fascinated by such optimized biological behaviours. “This is especially true for flyers, where mistakes in execution could potentially mean death,” he says. “The physics behind the way they do it is intriguing and it probably needs elegant and sophisticated mathematics to be described. However, the hovering creatures appear to be doing this very simply and I found discovering the secret of this puzzle very interesting and exciting.”
Eisa adds that this element of the work ended up being very interdisciplinary, and both his own PhD in applied mathematics and the aerospace engineering background of Elgohary came in very useful. “We also benefited from lengthy discussions with a biologist colleague who was a reviewer of our paper,” Eisa says. “Luckily, they recognized the value of our proposed technique and ended up providing us with very valuable inputs.”
Eisa thinks the work could open up new lines of research in several areas of science and engineering. “For example, it opens up new ideas in neuroscience and animal sensory mechanisms and could almost certainly be applied to the development of airborne robotics and perhaps even artificial pollinators,” he says. “The latter might come in useful in the future given the high rate of death many species of pollinating insects are encountering today.”
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SpaceX and Amazon stand to get about 4% of the nearly $20 billion that states have proposed for rural broadband buildouts, representing roughly 21% of the locations under the federal BEAD program.
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This investment follows Washington Harbour’s earlier moves into space technology.
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SpaceX's network is pushing satellite broadband from a niche service into the mainstream and redefining expectations for ubiquitous access.
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Welcome, Jared Isaacman. We who love NASA, or at least the idea of NASA, wish you the very best in taking leadership of the great American space agency. You seem to be an agent for change and NASA sorely needs that. Its human spaceflight program, which garners most of its public attention and financial support, […]
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HOUSTON, TX – December 3, 2025 – For more than three decades, Celestis, Inc. has transformed remembrance into exploration, sending the names, ashes, and DNA of pioneers and visionaries into […]
The post Celestis Selects Stoke Space’s Nova for Infinite Flight: Humanity’s Next Deep-Space Memorial Mission appeared first on SpaceNews.
This episode of the Physics World Weekly podcast features Tim Hsieh of Canada’s Perimeter Institute for Theoretical Physics. We explore some of today’s hottest topics in quantum science and technology – including topological phases of matter; quantum error correction and quantum simulation.
Our conversation begins with an exploration of the quirky properties quantum matter and how these can be exploited to create quantum technologies. We look at the challenges that must be overcome to create large-scale quantum computers; and Hsieh reveals which problem he would solve first if he had access to a powerful quantum processor.
This interview was recorded earlier this autumn when I had the pleasure of visiting the Perimeter Institute and speaking to four physicists about their research. This is the third of those conversations to appear on the podcast.
The first interview in this series from the Perimeter Institute was with Javier Toledo-Marín, “Quantum computing and AI join forces for particle physics”; and the second was with Bianca Dittrich, “Quantum gravity: we explore spin foams and other potential solutions to this enduring challenge“.
This episode is supported by the APS Global Physics Summit, which takes place on 15–20 March, 2026, in Denver, Colorado, and online.
The post Building a quantum future using topological phases of matter and error correction appeared first on Physics World.
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