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S301 orbits Sagittarius A at 25,000 km/s, close enough that the black hole's rotation twists spacetime. Years of tracking should yield the first direct spin measurement.

These dim stars make it easier to spot the infrared glow of energy-harvesting megastructures, bypassing dusty false alarms and boosting SETI’s search efficiency.

New telescope in Chile captures millions of galaxies and asteroids, launching a 10-year mission to explore the Universe’s mysteries.