Explaining on Instagram: "Follow (us) @Explaining to learn something NEW every single day 🧠💫 About 400 years after Galileo proposed it, scientists finally proved his idea visually using a vacuum chamber 🧪 Galileo theorized that without air resistance, all objects fall at the same speed regardless of mass. In a vacuum chamber, engineers dropped a bowling ball and a feather at the same time, and they hit the ground simultaneously. The experiment works because removing air eliminates drag, the o