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Astronomers discover Milky Way’s biggest stellar black hole
BH3 spotted when scientists chanced upon star in Aquila constellation ‘wobbling’ under its gravitational force
BH3 is the most massive stellar black hole yet found in the Milky Way and revealed itself to researchers through the powerful tug it exerts on a companion star that orbits the object in the constellation of Aquila, the Eagle. As researchers were reviewing the Gaia observations, they noticed a distinct wobble in one of the stars in Aquila, a constellation that is visible in the summer sky in the northern hemisphere. Further observations from the European Southern Observatory’s Very Large Telescope in Chile’s Atacama desert confirmed BH3’s mass and the star’s orbit, which circles the black hole once every 11.6 years.
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