astronomy

Star S301 at 25,000 km/s: Einstein’s Test Around Sagittarius A*

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Discover star S301, detected by the ESO racing at 25,000 km/s (8.5% of light speed) around supermassive black hole Sagittarius A*. Learn how its orbit unlocks the black hole’s spin and tests Einstein’s General Relativity.

Beyond Chemical Rockets: Ion Drives, Fusion & Solar Sails [Guide]

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Discover the advanced propulsion systems breaking chemical rocketry limits: ion thrusters, Nuclear Thermal Propulsion (DRACO), Direct Fusion Drives (DFD), and relativistic solar sails designed to reach Mars and beyond.