Hydrogen Balloons

Hydrogen balloons are large, lightweight containers filled with hydrogen gas, which is much less dense than air. Because hydrogen is lighter, the balloon rises and floats, making it useful for things like weather observations or historical displays. However, hydrogen is highly flammable and can cause fires or explosions if not handled carefully. Modern balloons often use helium instead, which is safer but more expensive. Hydrogen's ability to lift objects efficiently makes it an effective, though risky, choice for lifting large loads aloft.