Extra-galactic nebulae
Edwin Hubble
Sold by Liber Astronomiae Antiquus, Dosrius, B, Spain
AbeBooks Seller since 19 May 2026
Used
Condition: Used - Very good
Ships from Spain to U.S.A.
Quantity: 1 available
Add to basketSold by Liber Astronomiae Antiquus, Dosrius, B, Spain
AbeBooks Seller since 19 May 2026
Condition: Used - Very good
Quantity: 1 available
Add to basketEste artículo incluye tres láminas y muchas tablas. En este artículo, Hubble determina la densidad media de nebulosas en el espacio y aplicó este resultado en la teoría de la relatividad general para obtener el radio de curvatura del universo finito: 600 veces la distancia a la que se pueden detectar nebulosas normales con el telescopio de 10 pulgadas. Este cálculo representa la exploración más audaz del universo que realizó y que estimuló enormemente el trabajo teórico en cosmología" (Mayall, Hubble: A Biographical Memoir, National Academy of Sciences). La profética frase de este artículo dice: "con aumentos razonables en el rango de láminas y el tamaño de los telescopios, podría ser posible observar fracción apreciable del universo de Einstein" (Hubble, 369). Y tenía razón. Tan solo tres años después, Hubble usaría la evidencia observacional recopilada para este artículo de 1926 para ayudar a formular la ley de Hubble que, al afirmar que las galaxias se alejan unas de otras a una velocidad proporcional a su distancia, efectivamente el universo está en movimiento. Mientras desarrollaba la clasificación morfológica de las galaxias que presenta en este artículo, "Hubble descubrió un hecho extraño: todas las galaxias que observaba parecían alejarse de la Tierra. Slipher, que avala las revoluciones asociadas a galaxias más que décadas antes que Hubble. En otras publicaciones, en 1926, Hubble ya tenía una buena idea, que los datos determinaba relaciones lineales entre el corrimiento al rojo y la distancia - que el corrimiento al rojo es proporcional a las distancias, el que una galaxia tiene el doble que la que está más lejos. Tres años después, cuando estuvo listo, Hubble formuló la ley de Hubble, que muestra que "las galaxias que se alejan son proporcionales a sus distancias: las galaxias más distantes se alejan más rápido que las galaxias cercanas se expanden", una idea que ha "provocado un cambio tan grande en la concepción del universo como la revolución copernicana 400 años antes".
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