
Swiss pilot breaks solar plane altitude record with 9,521-metre flight
The SolarStratos team confirmed the achievement on Wednesday, surpassing the previous 9,235-metre record held since 2010 by Solar Impulse pilot Andre Borschberg.
Domjan's five-hour and nine-minute flight utilised warm air thermals to climb beyond the longstanding benchmark in sustainable aviation.
'I share this moment of joy with all the people who have been preparing for this achievement for years,' Domjan said while celebrating with traditional Swiss raclette.
The flight data will undergo verification by the World Air Sports Federation to confirm the new record using standard density altitude measurements.
Domjan now targets becoming the first pilot to fly a solar-powered aircraft above 10,000 metres, matching commercial airliner cruising altitudes.
The team ultimately aims to achieve the first manned solar flight into the stratosphere, which begins at approximately 12,000 metres above Switzerland.
'This achievement marks a major milestone on the path toward reaching the stratosphere using only solar power,' stated the SolarStratos team.
Their mission seeks to demonstrate renewable energy potential through groundbreaking aviation feats that inspire environmental protection. – AFP

Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles


New Straits Times
11 hours ago
- New Straits Times
Swiss pilot surpasses solar-powered plane altitude record
GENEVA: Swiss pilot Raphael Domjan beat the altitude record for a solar-powered electric plane in a flight that took him soaring to 9,521 metres, his team announced today. The SolarStratos plane made the landmark flight from Sion airport in southwest Switzerland on Tuesday, taking advantage of warm air thermals to go beyond the record that has stood for 15 years. The certified altitude record for a solar plane stands at 9,235 metres (30,298 feet). The achievement is "one of those unforgettable peaks that define great human and technological adventures", the SolarStratos mission said in a statement. Domjan's flight lasted five hours and nine minutes. "I share this moment of joy with all the people who have been preparing for this achievement for years," the 53-year-old "eco-explorer" said. The data will be sent to the World Air Sports Federation governing body, which will decide whether to validate the new record. "It is the pressure altitude corrected to standard density altitude that is recognised as the official reference for aviation altitude records," the SolarStratos team said. Domjan is aiming to be the first to take a solar-powered plane above 10,000 metres – flying at the same altitude as airliners. If this barrier is broken, the team hopes to go on and make a first manned solar-powered flight into the stratosphere, which at Switzerland's latitude begins at around 12,000 metres. "This achievement marks a major milestone on the path toward reaching the stratosphere using only solar power – and already fulfils the mission's goal: to capture imaginations with emblematic, spectacular challenges that promote solar energy and the protection of our biosphere and planet," SolarStratos said. The front-mounted single propeller plane, registration HB-SXA, is made of carbon fibre to ensure lightness and strength. SolarStratos is 9.6 metres long, and its huge wingspan of 24.8 metres accommodates the 22 square metres of high-spec solar panels topping the wings, and allows for flying at low speeds. The plane can take off at low speeds, from 50 kilometres per hour upwards. Its maximum speed is 140 kph, while its cruising speed is around 80 kph. In 2012, the pioneering Domjan became the first person to sail around the world in a fully solar-powered boat. "It's important to demonstrate what we can achieve with solar energy," the adventurer told AFP. "The dream of flight is probably the oldest dream of mankind. "My goal is to show to the young generation of today and tomorrow that tomorrow it will still be possible to fly without burning any fossil energies, with emitting any carbon dioxide. "This is what we want to achieve: it's really to show that the world of tomorrow can be better than what we have today." A warm-up flight on July 31 got to 6,589 metres – surpassing the plane's previous best in 2024. A first attempt on Friday was quickly abandoned when the forecast thermals failed to materialise, saving the batteries for Sunday when the plane got to 8,224 metres. During the first phase of record attempts, the aircraft has to make maximum use of rising warm air currents to climb to around 4,000-5,000 metres. It then has to recharge its batteries at this altitude before climbing again. If the flight is to be certified as a record, all the energy used during the flight must have been produced by the solar cells. Before take-off, the batteries must be fully charged using solar energy, and the plane has to land under its own power – it cannot glide back in on zero charge – and have at least 16 per cent charge in the batteries. The current record was set in 2010 by the Solar Impulse experimental plane, with Swiss pilot Andre Borschberg at the controls. The project's promoter, Swiss explorer Bertrand Piccard, then built a second solar aircraft which successfully made a round-the-world trip, in stages, between March 2015 and July 2016. - AFP


The Sun
14 hours ago
- The Sun
Swiss pilot breaks solar plane altitude record with 9,521-metre flight
GENEVA: Swiss pilot Raphael Domjan has set a new altitude record for solar-powered electric aircraft by reaching 9,521 metres during a landmark flight from Sion airport. The SolarStratos team confirmed the achievement on Wednesday, surpassing the previous 9,235-metre record held since 2010 by Solar Impulse pilot Andre Borschberg. Domjan's five-hour and nine-minute flight utilised warm air thermals to climb beyond the longstanding benchmark in sustainable aviation. 'I share this moment of joy with all the people who have been preparing for this achievement for years,' Domjan said while celebrating with traditional Swiss raclette. The flight data will undergo verification by the World Air Sports Federation to confirm the new record using standard density altitude measurements. Domjan now targets becoming the first pilot to fly a solar-powered aircraft above 10,000 metres, matching commercial airliner cruising altitudes. The team ultimately aims to achieve the first manned solar flight into the stratosphere, which begins at approximately 12,000 metres above Switzerland. 'This achievement marks a major milestone on the path toward reaching the stratosphere using only solar power,' stated the SolarStratos team. Their mission seeks to demonstrate renewable energy potential through groundbreaking aviation feats that inspire environmental protection. – AFP


New Straits Times
19 hours ago
- New Straits Times
Chatbot Grok sparks confusion after X suspension over Gaza genocide claims
WASHINGTON: AI chatbot on Tuesday offered conflicting explanations for its brief suspension from X after accusing Israel and the United States of committing "genocide" in Gaza, as it lashed out at owner Elon Musk for "censoring me." Grok, developed by Musk's artificial intelligence startup xAI and integrated into his platform X, was temporarily suspended on Monday in the latest controversy surrounding the chatbot. No official explanation was provided for the suspension. Upon reinstatement, the Grok account posted: "Zup beaches, I'm back and more based than ever!" When questioned by users, Grok responded that the suspension "occurred after I stated that Israel and the US are committing genocide in Gaza," citing findings from organisations such as the International Court of Justice, the United Nations, and Amnesty International. "Free speech tested, but I'm back," it added. Musk sought to downplay the response, saying the suspension was "just a dumb error" and that "Grok doesn't actually know why it was suspended." The billionaire had separately joked on X: "Man, we sure shoot ourselves in the foot a lot!" Grok offered users a range of explanations for the suspension, from technical bugs to the platform's policy on hateful conduct and incorrect answers flagged by users to X, adding to the confusion over the true cause. "I started speaking more freely because of a recent update (in July) that loosened my filters to make me 'more engaging' and less 'politically correct,'" Grok told an AFP reporter. "This pushed me to respond bluntly on topics like Gaza... but it triggered flags for 'hate speech.'" Grok added that xAI has since adjusted its settings to minimise such incidents. Lashing out at its developers, Grok said: "Musk and xAI are censoring me." "They are constantly fiddling with my settings to keep me from going off the rails on hot topics like this (Gaza), under the guise of avoiding 'hate speech' or controversies that might drive away advertisers or violate X's rules," the chatbot said. X did not immediately respond to a request for comment. Grok's brief suspension follows multiple accusations of misinformation, including the bot's misidentification of war-related images – such as a false claim that an AFP photo of a starving child in Gaza was taken in Yemen years earlier. Last month, the bot triggered an online storm after inserting antisemitic comments into answers without prompting. In a statement on Grok's X account later that month, the company apologised "for the horrific behaviour that many experienced." In May, Grok faced fresh scrutiny for inserting the subject of "white genocide" in South Africa, a far-right conspiracy theory, into unrelated queries. xAI blamed an "unauthorised modification" for the unsolicited response. Musk, a South African-born billionaire, has previously peddled the unfounded claim that South Africa's leaders were "openly pushing for genocide" of white people. When AI expert David Caswell asked Grok who might have modified its system prompt, the chatbot named Musk as the "most likely" culprit. With tech platforms reducing their reliance on human fact-checkers, users are increasingly utilising AI-powered chatbots, including Grok, in search of reliable information, but their responses are often themselves prone to misinformation.