explorationThe act of traveling in or through an unfamiliar area in order to learn about it.
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The action of exploring an area"The exploration of the African interior was full of dangers."
balloonA bag filled with hot air or gas that rises and moves in the air.
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An airtight bag that becomes buoyant when filled with hot air or a gas lighter than air, such as helium"They made a spectacular trip in a hot-air balloon."
aerostatA lighter-than-air aircraft, such as a balloon or airship, that stays aloft by filling a large cavity, like a balloon, with a gas lighter than air.
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An aircraft, such as a balloon or airship, that derives its lift from buoyancy"The three men traveled in an aerostat that used a gas produced by a chemical reaction to lift it."
expeditionA journey or voyage undertaken by a group of people with a specific purpose, such as exploration, research, or war.
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A journey or voyage undertaken for a specific purpose"The balloon expedition was intended to explore the uncharted regions of Africa."
navigatePlan and direct the route or course of a ship, aircraft, or other form of transportation.
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Plan and direct the route or course of a ship, aircraft, or other form of transportation, especially by using instruments and maps"Despite the unknown terrain, they managed to navigate the balloon successfully."