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On December 1, 1783, as many as 400,000 people—half the city’s population—swarmed into the area around the Château des Tuileries to watch a hydrogen balloon carry J.A.-C. Charles and M.N ...

I had never flown a paper balloon before. I had never flown with hydrogen before. Nor had I ever flown with an overcast sky before, or in a balloon without a net. I had never flown alone before ...

These data highlight the role of hydrogen dynamics in defining exotic ice phases and could have implications for the geodynamics of icy planets.

“Hydrogen gas explosions ignite with minimal ignition energy, have a broad explosion range, and unleash flames that race outward rapidly,” said Wang Xuefeng, a lead researcher at the CSSC. The ...

But then it starts to rise! Using a hydrogen balloon (much better than a hot air balloon), equipped with a measuring device, an electroscope, which measures whether something is electrically charged, ...

Apr. 18, 2025 — A new study suggests that early-life exposure to two widespread environmental pollutants -- small particle air pollution and outdoor artificial light at night -- could increase ...