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Extraterrestrials… (ALIENS!!!). Outcome: 117-11 Analyse examples of Canadian extraterrestrial encounters. WebQuest. For each slide, follow the instructions and go to the indicated website to answer any questions. Key Terms are in PINK. Extraterrestrial.
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Extraterrestrials… (ALIENS!!!) Outcome: 117-11 Analyse examples of Canadian extraterrestrial encounters.
WebQuest... • For each slide, follow the instructions and go to the indicated website to answer any questions. • Key Terms are in PINK.
Extraterrestrial • Extraterrestrial: Life that does not originate from Earth. • It is unknown whether any such life exists. There is no evidence to this claim! • The theorization of extraterrestrial life is known as astrobiology or exobiology (like exo-planets).
Extraterrestrial Explanations • One possibility to explain the existence of extraterrestrial life is that life has emerged independently at many places throughout the Universe. • Another possibility is exogenesis, in which life would have spread between habitable planets.
Extraterrestrial – What types of life count? • Possible forms of extraterrestrial life range from simple bacteria-like organisms to sapient beings far more advanced than humans.
Extraterrestrial – Where is this possible? • Suggested locations on which life might have developed, or which might continue to host life today, include the following: • Planets Venus and Mars • Moons of Jupiter and Saturn (such as Europa and Titan) • Extrasolar GOLDILOCKS planets
What is a goldilocks planet? • Go to the following to find out the answer! What is a goldilocks planet? What does a planet need to have to classify as one? • http://en.wikipedia.org/wiki/Goldilocks_planet • Read the following article to determine some possible goldilocks planets… • http://www.newscientist.com/article/dn11710-goldilocks-planet-may-be-just-right-for-life.html
Evidence for Extraterrestrial Life • The vast size of the observable universe and the number of galaxies, stars, planetary systems seems to suggest that life is very probable. • Visit the website below and find at least 3 pieces of evidence that you find convincing… • http://www.newscientist.com/article/dn9943-top-10-controversial-pieces-of-evidence-for-extraterrestrial-life.html
Stephen Hawking • The following sites look at Stephen Hawking’s view of aliens and extraterrestrial life (the first is a video, the second is text). What does he think? Do you agree with him? • http://abcnews.go.com/Technology/Space/stephen-hawking-alien-contact-risky/story?id=10478157 • http://www.msnbc.msn.com/id/36769422/
UFO • UFO: Unidentified Flying Objects • Most UFO sightings are explained either as sightings of Earth-based aircraft or known astronomical objects, or as hoaxes. • Some sightings have remained unexplained, in some cases having been reported by trained professionals.
UFO Sightings in Canada! • Almost 10% of Canadians believe they have seen a UFO • 78% of Canadians believe in life on a planet other than Earth • 57% of Canadians believe that the government is hiding information about aliens… • Information from: http://www.virtuallystrange.net/ufo/mufonontario/archive/97poll.htm
UFO Sightings in Canada! • UFO Sightings in Canada: Go to the following website to find out where UFOs have been seen! • Have there been any sightings in Nova Scotia? Where? • http://www.ufoinfo.com/sightings/canada.shtml
UFO Sightings in Canada! • On the next few slides, I have put the websites and also the newspaper articles for some famous Canadian “alien” or UFO sightings!!! • Feel free to read/listen! Some are weird!
Shag Harbour Sighting… • Visit the following website to see some CBC videos/radio clips of people describing UFO sightings! WEIRD!!! • http://archives.cbc.ca/science_technology/unexplained/topics/725/ • This website discusses a famous sighting nearby in Shag Harbour! • http://archives.cbc.ca/search?q=shag+harbour&RTy=0&RC=1&RP=1&RD=1&RA=0&th=1&x=0&y=0
Close Encounters of the Canadian Kind - Radio • http://archives.cbc.ca/science_technology/unexplained/topics/725/ • 7 min
One of Canada’s earliest paranormal sightings • Broadcast date: Aug. 24, 1962
UFO Landing Sight • http://archives.cbc.ca/science_technology/unexplained/topics/725/ • An invitation that’s out of this world (July 2, 1967)
CBC TV clip • http://archives.cbc.ca/science_technology/unexplained/clips/4343/ • 3 min
Radio Recording…1986 • http://archives.cbc.ca/science_technology/unexplained/clips/4399/ • 24 min
Crop Circles in Canada… CBC • http://archives.cbc.ca/science_technology/unexplained/clips/4350/ • 4 min
Crop Circles: Leaving a mark in Canada • Broadcast Date: Aug. 21, 1990
The Truth is Out There • http://archives.cbc.ca/science_technology/unexplained/topics/725/
Math and UFOs • The Drake Equation • Developed by Frank Drake in 1961 as a way to focus on the factors which determine how many intelligent, communicating civilizations there are in our galaxy (Milky Way). • Go to the following equation and test out the theory!!! • http://www.activemind.com/Mysterious/Topics/SETI/drake_equation.html
Drake Equation • The Drake Equation is: N = N* x fp x ne x fl x fi x fc x L • where: • N = # of civilizations in our galaxy with which communication might be possible • N* = number of stars in the Milky Way • fp = fraction of those stars that have planets • ne = average number of planets that can potentially support life per star that has planets • fℓ = the fraction of the above where life potentially evolves • fi = the fraction of the above that actually go on to develop intelligent life • fc= the fraction of civilizations that develop a technology that releases detectable signs of their existence into space • L = the length of time such civilizations release detectable signals into space
The Answer… • Find the number of civilizations in our galaxy with which communication might be possible, according to this equation using the current estimates indicated on the website! • Now play around on the site using different probabilities (the page will do the calculations for you!) • Do you think this equation is useful or not? Why?
Review Questions • 1) Key Terms: UFO, extraterrestrial, astrobiology or exobiology, goldilocks planet, exogenesis • 2) What are some possible explanations for extraterrestrial life? • 3) Where might extraterrestrial life exist? What kind of life is it? • 4) What is a goldilocks planet? Give an example. • 5) Give at least 3 pieces of evidence for extraterrestrial life. Do you think this is enough to convince you that aliens may exist? Why or why not? • 6) What does Stephen Hawking think about extraterrestrial life? Do you agree with him? Why or why not? • 7) What are UFOs? What are most UFO sightings deemed to be? • 8) Have there been any sightings in Nova Scotia? Where? • 9) Listen or read about some UFO sightings in Canada. Do these descriptions change your mind? Why or why not? • 10) Drake equation: Do you think this equation is useful or not? Why?