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⚡TECH: Harvard's RoboBee Achieves Untethered Solar-Powered Flight Harvard researchers have demonstrated RoboBee X-Wing, an insect-sized flying robot capable of untethered flight powered entirely by solar energy. Weighing just 259 milligrams, the tiny robot uses four X-shaped wings that flap up to 170 times per second, along with onboard electronics and miniature solar cells, allowing it to lift off, hover, and maneuver without wires or batteries. The breakthrough marked a major milestone in microrobotics by eliminating the need for external power cables, one of the biggest obstacles to creating fully autonomous insect-scale flying robots. While the current system requires light intensity equivalent to three suns to operate, limiting practical outdoor use, the research demonstrates the potential for future generations of lightweight autonomous micro aerial vehicles. Projects like RoboBee could eventually contribute to applications such as environmental monitoring, precision agriculture, search-and-rescue missions, and scientific exploration in spaces too small or hazardous for larger drones. The achievement highlights how advances in miniaturized robotics, lightweight materials, and energy-efficient engineering are pushing the boundaries of what tiny autonomous flying machines can accomplish. 🐝🤖☀️🚁 -