Source:OurAmazingPlanet In the spring or autumn, the pole is tipped neither toward or away fro the sun. Days and nights are about equal in length. These times are called equinoxes. As the seasons change, the apparent path of the sun in the sky changes. In summer, the sun arcs high, and the days are longer […]

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Today at 10:49 EDT we officially enter the Autumn season. The Autumnal equinox gives us the same amount of day and night; sunset and sunrise become exactly 12 hours apart. On September 22, 2012, the Fall season brings us cooler temperatures as we move closer to Winter. In the Spring, we call this the Vernal […]

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This non-stop video shows 297 frames from the Mars Descent Imager aboard NASA’s Curiosity rover as it descended to the surface of Mars. These thumbnail images were received on Earth on August 6, 2012, and cover the last two and a half minutes of descent. Mars Science Laboratory (MSL) is a robotic space probe mission […]

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Did you watch the Curiosity Rover landing? A jubilant crowd of blue shirts applauded gleefully as the Curiosity Rover (video link provided in case you missed it) landed on the planet Mars. This signaled mission accomplished. Well over 200,000 viewers were watching the live NASA video, as history was in the making. “Curiosity successfully landed in […]

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Stream videos at Ustream NASA TV is broadcast by satellite with a simulcast over the Internet. Local cable television systems across the U.S. and amateur television repeaters may carry NASA TV at their discretion, as NASA-created content is considered a work of the U.S. government and is in the public domain.

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Eratosthenes Calculates Earth’s Circumference ca 240 BC Eratosthenes knew that on the summer solstice at local noon in Syene (Aswan, Egypt) the sun would appear at the zenith, directly overhead. He also knew that in Alexandria the angle of elevation of the sun was 1/50th of a circle (7°12′) south of the zenith on the […]

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Here are five things you never knew about wetsuits. Wetsuits are often worn by those in water sports. Such as: Divers, surfers, windsurfers, canoeists, and fishermen. A synthetic rubber often used in making wetsuits is called neoprene, which is also used to make many other products, ranging  from masks to automotive seat covers. 1. Hugh Bradner was an American […]

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The first recorded observation of the transit of Venus was made on December 4 (Nov 24 Julian calendar), 1639 in Much Hoole, Lancashire, England. Jeremiah Horrocks and William Crabtree were the only two people to observe and record the event. Venus in sole visa was Horrocks’ treatise and proof of his observation. Unfortunately, the two friends both […]

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Watch Live Webcast Transit Of Venus Watch live streaming video from swansiliguri at livestream.com SWAN Live Webcast: Begins Tuesday June 5, 2012 | 7:00 PM | EDT | USA Sky Watchers’ Association of North Bengal — Transit OF Venus — SWAN operates from Siliguri, the city at foothills in northern part of West Bengal state […]

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The 2012 Transit of Venus The transit of Venus will begin at 22:09 UTC on June 5, 2012. It will end at 04:49 UTC on June 6. This won’t happen again until December of 2117. In the United States, visibility will begin on June 5, and will remain until sunset. The transit will be at […]

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