First evidence of a giant impact between two exoplanets

First evidence of a giant impact between two exoplanets



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The earth and moon are believed to be products of this type of giant impact, astronomers conjecture that such crushing should be common in early systems, but they have been difficult to observe around other stars. Abrir en Google Traductor.



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Now MIT astronomers and other collaborators have discovered evidence of a giant impact that occurred in a nearby star system, just 95 light-years from Earth, the star named HD172555 is about 23 million years old, and scientists suspect its dust. It has traces of a recent collision.



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The researchers determined that the collision likely occurred between a terrestrial planet the size of the Earth and a smaller impactor at least 200,000 years ago at speeds of 10 kilometers per second - a dramatic event that would explain the gas and dust observed around the Earth. star.





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