Tag: galaxies

The Epic Battle of Black Holes: In a distant galaxy, a thrilling cosmic spectacle is unfolding as two massive black holes engage in a gravitational duel. Recently captured by NASA's renowned Hubble telescope and the Chandra X-ray Observatory, this rare event has scientists captivated. These black holes are on a collision course, drawing closer with each orbit until they inevitably merge. Located just 300 light-years apart, this pair of supermassive black holes is the closest ever observed using visible and X-ray light technologies in our nearby universe. While distant black hole pairs have been documented before, this particular duo offers a unique opportunity to witness a phenomenon that was more common in the early universe during frequent galaxy mergers. The discovery of this cosmic showdown began with peculiar diffraction spikes in the Hubble images, indicating a concentration of hot gas compressed into a relatively compact space within the galaxy. "This extraordinary view is a rare sight in our cosmic neighborhood, hinting at intriguing dynamics within the galaxy," remarked Anna Trindade Falcão, the lead astronomer from the Harvard & Smithsonian Center for Astrophysics. These spikes are a result of bright light bending around telescope mirrors, with Hubble detecting three of them clustered at the galaxy's core. Upon directing Chandra's X-ray capabilities towards the galaxy, Falcão's team identified two intense sources of high-energy radiation precisely aligned with the optical spikes. This led to the conclusion that the black holes were actively consuming surrounding material, emitting powerful radiation as active galactic nuclei (AGN). The origin of the third glowing spot remains enigmatic, possibly caused by a shockwave generated by high-speed plasma jets emanating from one of the black holes, akin to a forceful stream striking a sandpile. This cosmic drama traces back to the merger of two galaxies eons ago, each hosting a supermassive black hole at its core. As the galaxies collided, their central black holes also merged, resulting in the current celestial spectacle. Presently, the two colossal black holes are in close proximity, fiercely consuming matter and emitting a dazzling display of light. Their gravitational attraction is gradually drawing them closer, with a projected collision in around 100 million years, unleashing gravitational waves that will reverberate through space and time. "The intricate details of this cosmic dance are made visible thanks to the remarkable resolution of the Hubble telescope," added Falcão. Image credit: Joseph Olmsted/NASA

Tag: galaxies

NASA spots pair of supermassive black holes battling it out as their galaxies collide

Hubble images a pair of tiny dwarf galaxies

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