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Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 March 30 Beijing Ancient Observatory Credit & Copyright: Judy Tobin Explanation: Did observatories exist before telescopes? One example that still stands today is the Beijing Ancient Observatory in China. Starting in the 1400s astronomers erected large instruments here to enable them to measure star and planet positions with increasing accuracy. Pre-telescopic observatories throughout the world date back to before recorded history, providing measurements that helped to determine...

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 March 17 SN 1006: History's Brightest Supernova Credit: Frank Winkler (Middlebury College et al., AURA, NOAO, NSF Explanation: Suddenly, in the year 1006 AD, a new star appeared in the sky. Over the course of just a few days, the rogue star became brighter than the planet Venus. The star, likely the talk of everyone who could see it, was recorded by people who lived in areas...

<p>How did our ancestors eat in the days before there were supermarkets, fast-food restaurants, refrigerators or temperature-controlled stoves and ovens? And what did the dinner table look like before the discovery of the New World brought back to Europe staple foods ranging from turkey to tomatoes and the humble potato?</p>