Only a few days later, at 13:45 on December 1, 1783, professor Jacques Charles and the Robert brothers (Les Frères Robert) launched a new, manned hydrogen balloon from the Jardin des Tuileries in Paris, amid vast crowds and excitement.
Charles and Robert carried a barometer and a thermometer to measure the pressure and the temperature of the air, making this not only the first manned hydrogen balloon flight, but also the first balloon flight to provide meteorological measurements of the atmosphere above the Earth's surface.