Balloons were also flown in the total solar eclipses in South America in 2019 and 2020. "Gravity waves" can appear during a solar eclipse. On April 7 and 8, 19 teams will fly balloons every hour ...

Magnetic force can overcome gravity. That’s why this magnet can hover in mid-air. Electrostatic force also attracts and repels objects. Rubbing the balloon on another surface creates a small ...