Space Sails Pushed by Lasers Hit a Speed Bump Near the Speed of Light!

Scientists have designed super-cool space sails that get pushed through the cosmos by powerful beams of light, just like wind pushing a sailboat on Earth! But they just discovered a bizarre cosmic speed limit because the light itself starts to push back and slow the sails down once they go incredibly fast. How wild is it that even light can get in its own way when you are racing through the stars?