In this vodcast Rebecca Barnes discovers the motions of the stars, learns how astronomers measure their distances and looks at the new European mission that will really get to grips with our place in the Universe: Gaia.

For more information, visit the following web page in the "Image & Movie gallery".

		Little Books of Gaia
		The Little Books of Gaia are A4-page-size summaries of the Gaia mission which can be folded into little booklets. They are available in pdf format.
		Read the "Little Books" ...
		Gaia-minikönyvek
		A Gaia-minikönyvek a Gaia missziót ismertetik. Az A4-es lapra nyomtatott szöveg kis könyvecskékké hajtható össze. Letölthetõ pdf dokumentumként.
		Olvasd a minikönyveket!
		Los Minilibros de Gaia
		Los Minilibros de Gaia son breves monografías acerca de la misión Gaia, para imprimir sobre folios A4 y plegar en forma de pequeños cuadernos. Están disponibles en formato pdf.
		Leer los "Minilibros de Gaia" ...
		Les Petits Livres de Gaia
		Les Petits Livres de Gaia sont des résumés de format A4 sur la mission Gaia. Ils peuvent être pliés sous la forme de petits livres. Ils sont disponibles ci-dessous en format PDF.
		Lire les "Petits Livres" ...
		Os Pequenos Livros de Gaia
		Os Pequenos Livros de Gaia tratam de diferentes aspectos relacionados com a missão Gaia. São resumos que se imprimem numa página A4 e que se dobram na forma de livrinhos. Estão disponíveis pdf.
		Ler os "Pequenos Livros" ...
		De Kleine Gaia Boekjes
		De Kleine Gaia Boekjes zijn samenvattingen van het Gaia project, elk 1 A4-tje groot. De boekjes ontstaan door het papier op een bepaalde manier te vouwen. De boekjes zijn beschikbaar in PDF formaat.
		Lees de Kleine Boekjes ...
		Die Kleinen Gaia-Bücher
		Die Kleinen Gaia-Bücher sind Zusammenfassungen der Gaia-Mission auf DIN-A4 großen Seiten, die sich zu kleinen Büchlein zusammenfalten lassen. Diese Seiten sind im PDF-Format vorhanden.
		Lesen Sie die Kleinen Bücher ...
		I Libretti di Gaia
		I Libretti di Gaia riassumono in poche pagine la missione Gaia. Sono disponibili in formato PDF.
		Leggete i libretti di Gaia ...
		De små böckerna om Gaia
		Gaias små böcker är i A4 sida storlek och sammanfattar Gaia uppdraget. Tillgängliga i PDF format.
		Läs de små böckerna ...

Here you will be able to read about the history of star position measurements - the instruments and satellites that have helped us to explore and map the Galaxy. There are interactive models of the Milky Way galaxy as well as simulations of the measurement principles. You can also learn about Gaia - the satellite that ESA is planning to launch about 2013 which will vastly expand our knowledge about the Galaxy we live in.

These `interactive books´ are based on the Little Books of Gaia designed by A. Colorado McEvoy.