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Cosmic Rays Map Secret Corridor In Egypt’s Great Pyramid
The nine-meter shaft could reveal more on the construction of the pyramids.
A recent discovery in Egypt’s Great Pyramid of Giza could reveal more about the construction of the world-famous landmark, according to a team of scientists from the “Scan Pyramids” project backed by the Egyptian Tourism Ministry of Antiquities.
The team used a non-destructive technique known as cosmic-ray muon radiography to scan a gabled limestone structure, discovering a nine-meter hidden corridor. The shaft is situated above the main entrance to Khufu’s Pyramid, one of the most significant archaeological monuments in the world and a site that still holds countless mysteries.
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The Scan Pyramids team has been working on the project since 2015, using infrared thermography, 3D simulations, and endoscope cameras to probe the ancient burial structure. Scientists reported several discoveries in the Great Pyramid of Giza five years ago, and the ongoing scans are helping to better understand the function and architectural makeup of the 5,000-year-old structure.
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AltoVolo Opens Orders For Limited Edition Sigma eVTOLs
Early buyers can now reserve build slots for AltoVolo’s 500-mile hybrid aircraft through a new online configurator.
AltoVolo has started taking pre-orders for its first electric vertical take-off and landing aircraft, the Sigma, moving the startup closer to commercial rollout. Customers can now secure a build slot with a £860 deposit and customize every detail online — from paintwork to seatbelt stitching. It’s the first configurator of its kind for a civilian eVTOL, mirroring how luxury car brands let clients tailor performance models before production.
The Sigma runs on a hybrid-electric tilting jet system built for long range and low noise. It can travel up to 500 miles at a 220-mph cruise, and is over 80% quieter than a helicopter. The three-seater weighs just 980kg and can maintain stable flight even if one jet fails. Safety systems include triple-redundant controls, thrust-vectoring stability and a ballistic parachute.
“We will be delivering an ultra-refined hybrid electric aircraft,” said founder and CEO Will Wood. “We believe there are thousands of customers for this type of cutting-edge technology”.
The first 100 units will come with exclusive materials and finishes. AltoVolo is also setting up a global service and maintenance network, with early planning for overhaul schedules already underway. The company’s focus on ownership experience echoes its ambition to anchor itself alongside established aviation brands rather than pure tech ventures.
To help new owners train, the company has built a full-scale simulator that replicates the Sigma cockpit in carbon fiber and leather. Pilots can log time toward a license using the system, aligned with the new US MOSAIC rules that ease certification for powered-lift aircraft. Certification work in Europe and the UK continues in parallel, signaling growing international alignment around light sport and eVTOL regulation.
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Noise inside the cabin has become another design focus. Engineers are refining internal vibration levels and developing a responsive soundscape that shifts with each jet’s power load — part feedback, part theatre.
Urban air mobility projects across the Gulf and elsewhere are pushing regulators and manufacturers to meet in the middle. Dubai, Riyadh and Doha have each outlined plans for air taxi corridors this decade. AltoVolo’s hybrid Sigma, sitting between electric promise and aviation realism, looks built for that middle ground.
