Historic Spacewalk - Polaris Dawn Sets New Records @PhysicsorBust

Uploaded October 2024 | Updated September 2026, 20 hours ago

Elon Musk has broken the records again. Polaris Down completed its scheduled spacewalk but it was a record setting event. Learn what records were set and more.

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Historic Spacewalk - Polaris Dawn Sets New Records

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$Golden Dome Explained: Space Lasers and Missile Defense The “Golden Dome” isn’t just science fiction—it’s a bold vision that includes developing space-based missile defense. Imagine a constellation of satellites, each armed with megawatt-class lasers, capable of intercepting enemy missiles in their boost phase. The idea traces back to the 1980s “Star Wars” program, but today advances in directed energy weapons, nuclear power in orbit, and phased-array optics are bringing it closer to reality. In this video, we break down the physics behind the Golden Dome: Why lasers are so effective—and limited—for missile defense. The power problem: megawatts of energy and the massive challenge of heat rejection in space. The diffraction limit and why optics the size of football fields might be required. Phased-array lasers and beam combining: cutting-edge concepts that could change the game. The enormous economic, political, and stability implications if such a system were ever built. Could the Golden Dome protect against nuclear attacks—or destabilize global security by giving one nation unprecedented military power? 🔔 Subscribe to Physics or Bust for more deep dives into the science shaping our future.$

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Historic Spacewalk - Polaris Dawn Sets New Records