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Halley's Comet By Ravi

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Giulia Bulled

on 11 October 2012

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Transcript of Halley's Comet By Ravi

By Ravi Wilde Halley's Comet Halley's Comet was the first ever proved returning comet, and is seen every 75-76 years. It is the best ever known comet and is clearly visible with the naked eye. Halley's comet has been recorded through the ages by the Chinese, Babylonian and Medieval European chroniclers since 240 BC, maybe even 1059 BC! What is Halley's Comet? What Halley's Comet looks like The returning nature of Halley's Comet's was discovered by the now renowned English astronomer, Edmond Halley. This was a startling discovery and scrapped many other theories about comets. It is the first ever comet observed by spacecraft and is made of a mixture of volatile ice and dust, such as water, carbon dioxyde and ammonia (a pungent smelling gas!) It forms a elliptical orbit around the sun, and just goes past Pluto's orbit. A little bit about Halley's Comet 1. Halley's Comet speeds up considerably whilst passing the Sun (as you may have noticed in the movie) because the Sun makes it melt, thus releasing gasses from the back and jet-propulsing it forwards.
2. In ancient times a comet signified bad luck. During the Norman invasion in 1066, as Halley's Comet appeared from seemingly nowhere, one of King Harold's servants told him that this "comet star" may be a sign of God's wrath of King Harold unrightfully claiming the English throne.
4. Halley's Comet is darker than coal, and reflects only 4% of the sunlight it receives. It only shines brightly when it nears the Sun and releases a vapour of shiny ice.
5. American writer Mark Twain was born on November 30th 1835, two weeks after an appearance of Halley's Comet's. In his biography, he stated that he was born with Halley's Comet, and is likely to die with it. Mark Twain died on April 21st 1910 - the day after Halley's Comet reappeared. Mad facts! Ten Facts About Halley's Comet http://www.tenfactsabout.co.uk/081108halleyscomet.htm 10/10/2012
Wikipedia http://en.wikipedia.org/wiki/Halley%27s_comet 10/10/2012
Google Images http://images.google.com.au/search?num=10&hl=fr&site=&tbm=isch&source=hp&biw=1920&bih=889&q=Halley%27s+Comet&oq=Halley%27s+Comet&gs_l=img.3..0l3.1577.6609.0.6980. 10/10/2012 Bibliography What is a Comet? A comet is a chunk of ice, dust, gas and other volatile materials.
When a comet orbits around a star, it begins to melt and creates a "tail". They usually orbit stars in an ellipse.
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