British adventurer Alicia Hempleman-Adams, alongside teammates Bert Padelt and Peter Cuneo, has become the first woman to cross the Atlantic Ocean in a hydrogen gas balloon, according to the original report. The trio launched from Presque Isle, Maine, on June 4 after weather delays, enduring rain, ice buildup, and altitudes up to 14,000 feet in an open basket. They landed safely in Luxembourg after 70 hours of flight, covering 5,282 kilometres at speeds reaching 100 km/h.

The 70-hour, 5,282-kilometre open-basket crossing

The flight required constant use of supplemental oxygen to stave off hypoxia at average altitudes of 14,000 feet, as reported.. The open basket—rare in modern ballooning—exposed the crew to subfreezing temperatures, rain, and ice accumulation that threatened the balloon's integrity. Hempleman-Adams told the press that there were moments when they thought they might not make it, calling the final landing an extraordinary team effort.

Why hydrogen? The dangerous lift gas choice

Hydrogen is highly flammable and far less common in modern ballooning than helium, which is inert but increasingly scarce and expensive. according to the report, the balloon Atlantic Explorer used hydrogen for lift, a choice that added significant risk. the same gas infamously doomed the Hindenburg in 1937. Hempleman-Adams's successful crossing revives a technique almost abandoned for safety reasons, though it offers higher lift capacity and lower cost.

Rain, ice, and the decision point over Newfoundland

The crew faced a critical juncture once clear of Newfoundland. The report states that after passing that point, the only alternative landing site would have been the open ocean. Rain caused ice to build up on the balloon envelope, a dangerous scenario that could have altered buoyancy. The team pressed on , relying on weather forecasts and decades of experience from its leader, who is the daughter of Sir David Hempleman-Adams—a solo open-basket Atlantic crosser himself.

A family legacy and royal recognition

Hempleman-Adams was awarded an OBE by King Charles III in December 2024 for her previous daring feats, including a women's world altitude record in a small hot air balloon in 2020. that flight, from Calgary, Alberta, saw temperatures as low as -30°C. Her father's transatlantic solo crossing in an open basket balloon set the stage for her ambition. The launch site in Presque Isle is historically significant: it was the starting point for the first ever transatlantic crossing by Ben Abruzzo, Maxie Anderson,and Larry Newman in 1978, as noted in the report.