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GEORGE ELLERY HALE
GEORGE ELLERY HALE
USA (1868 - 1938)
George Ellery Hale was an American solar astronomer, born in Chicago. He was educated at MIT, at the Observatory of Harvard College, (1889-90), and at Berlin (1893-94). As an undergraduate at MIT, he invented the spectroheliograph, with which he made his discoveries of the solar vortices and magnetic fields of sun spots.
 

Disfrute estos perspicaces y educacionales videoclips obtenidos de más de 70 horas de entrevistas con las más notables figuras en astronomía tomadas durante la filmación del documental 400 Años del Telescopio.

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Catherine Cesarsky

IYA Greeting
Catherine Cesarsky - International Astronomical Union

2009 has been declared by the International Astronomical Union the International Year of Astronomy.

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Catherine Cesarsky

AIA Saludo (Español)
Catherine Cesarsky - International Astronomical Union

2009 es el Año Internacional de Astronomia, cuatro ciento años despues de la primera observación de Galileo hizo con su pequeño telescopio sobre la luna. La Union Astronomica Internacional invita a toda la humanidad a mirar al universo. 2009, el universo para que lo descubres.

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Catherine Cesarsky

ALMA's arrays and observation support facility
Catherine Cesarsky - International Astronomical Union

We are at the ALMA operations support facility. We are 2,900 meters altitude on the Chajnantor mountain and you know that the ALMA facility will in fact operate much higher, at 5,000 meters.

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Catherine Cesarsky

Justifying ALMA's costs
Catherine Cesarsky - International Astronomical Union

The whole world got together to construct ALMA. It’s a very important facility which should bring complete new knowledge about the universe.

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Catherine Cesarsky

ALMA's spectrum range
Catherine Cesarsky - International Astronomical Union

ALMA will work at the millimeter and sub-millimeter range, which means the wavelengths, these are microwaves and their wavelength is of that size, between one millimeter to a tenth of a millimeter, .3 millimeters, actually, for ALMA. This is a wavelength that has been least explored in astronomy these days, and so the potential for discovery is absolutely enormous.

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