¿Por qué se mueven las estrellas?

La Agencia Espacial Europea lanzó en 2013 una misión única. La nave Gaia fue enviada al espacio para medir las posiciones, distancias y movimientos de las estrellas.

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Según afirmaron los científicos a cargo de la misión, tuvo como objetivo construir el catálogo espacial 3D más grande y preciso jamás realizado del universo observable.

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Entre las mediciones de los dos mil millones de objetos espaciales hay: Estrellas Planetas Asteroides Cometas Cuásares

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Gaia, sin proponérselo, detectó terremotos estelares o ‘Starquakes’. Son pequeños movimientos registrados en la superficie de una estrella que cambian la forma de las mismas.

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El descubrimiento podría brindar nuevos conocimientos sobre el funcionamiento interno de estos soles y, fundamentalmente, sobre las estrellas y el origen de la Vía Láctea.

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“El descubrimiento de los terremotos estelares es sorprendente ya que la nave espacial no fue diseñada para hacer ese trabajo”, dijo Conny Aerts, astrónoma de la Universidad de Lovaina, Bélgica.

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El costo total de la misión ronda los 1.000 millones de dólares, incluida la fabricación, el lanzamiento y las operaciones en tierra de una misión, que tiene 15 años de trabajo.

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