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Dec. 23, 2011

La Tierra podría tener dos lunas en cualquier momento

by Aleszu Bajak

Click to enlarge images

Un grupo de científicos han teorizado que la Tierra podría tener dos lunas en cualquier momento, ya que nuestra gravedad puede capturar asteroides pequeños temporalmente. Su estudio, aceptado por la revista astronómica ICARUS, afirma ser la primera vez que se ha calculado las características de la población de estos objetos próximos a la Tierra (near Earth objects en inglés).

Un grupo de investigadores liderado por Mikael Granvik de la Universidad de Hawaii han descrito sus calculaciones de satélites naturales que orbitan la Tierra. Concluyen que en cualquier momento hay por lo menos un objeto de un metro en diámetro orbitando la Tierra.

Postulan que este satélite natural orbita la Tierra tres veces en nueve meses antes de que se reemplaza por otro.

NASA tiene una página de web dedicada al monitoreo que estos objetos próximos a la Tierra llamada Asteroid Watch.

“La mayoría de la gente está fascinada con objetos próximos a la Tierra,” dijo Don Yeomans, gerente del estudio de éstos objetos para la NASA. “Estoy de acuerdo con ellos. Los he estudiado por más de tres decadas y me parecen científicamente fascinantes, y algunos son potencialmente peligrosos para la Tierra.”

Foto – Imagen del asteroide Eros tomada por NASA/JPL/JHUAPL

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About Aleszu Bajak

Aleszu Bajak is a science writer based in Buenos Aires, Argentina. Before moving to the Southern Cone, he worked as a producer for Science Friday, as a research technician at Cornell's gene therapy department, and as a guitar teacher.

The views expressed are those of the author and are not necessarily those of Science Friday.

Science Friday® is produced by the Science Friday Initiative, a 501(c)(3) nonprofit organization.

Science Friday® and SciFri® are registered service marks of Science Friday, Inc. Site design by Pentagram; engineering by Mediapolis.

 

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