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Hubble reveals two rare cosmic collisions near Fomalhaut, explaining a long-missing "planet" as dust from giant space rocks.
NASA's Hubble Space Telescope has captured rare images of dusty debris from two massive cosmic collisions near the young star Fomalhaut, 25 light years away.
The bright spot once thought to be a planet was revealed to be transient dust from impacts between space rocks at least 60 kilometers wide.
These collisions, occurring within a 20-year span, are extremely rare—possibly once every 100,000 years—making the dual events surprising.
The debris clouds mimicked planets temporarily before dispersing, offering a real-time glimpse into planetary formation.
Scientists plan to monitor the dust to study its evolution, with findings published in Science.
El Hubble revela dos raras colisiones cósmicas cerca de Fomalhaut, lo que explica un "planeta" desaparecido hace mucho tiempo como polvo de rocas espaciales gigantes.