20% off friends and family sale


Friends & Family Sale

20% off your entire purchase*

Use code NEWBOOK at checkout.

Offer expires September 30, 2018.
*excludes new releases

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World Book Blog

Rediscovering the Milky Way

Tuesday, September 25, 2018 10:40:00 AM

Earlier this year, in April, the European Space Agency (ESA) released the second trove of data gathered by the space probe Gaia (named after the ancient Greek goddess Gaia). Gaia’s precise measurements of the position, brightness, motion, and color of over 1.3 billion stars will transform astronomers’ understanding of our galaxy, the Milky Way.

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