UFO - something strange that you see in the sky that could be from another part of the universe, abduction - when you are taken away illegally, researcher - a person who studies a subject in detail in order to discover new information about it, picture the scene - to imagine a situation, strangely - in an unusual way, disappear - to become impossible to see, hill - a raised area of land, smaller than a mountain, experience - knowledge that you get from doing a job, or from doing, seeing, or feeling something, witness - someone who sees an accident or crime, debris - broken pieces of something, burn marks - an area of damage that is left by fire, ground - the surface of the Earth, crash - an accident in which a vehicle hits something, society - a large group of people who live in the same country or area and have the same laws, traditions, etc, sighting - an occasion when you see something that is rare or unusual, comet - an object in space that leaves a bright line behind it in the sky, meteor - a rock from outer space that becomes very hot and burns brightly in the sky at night, among - in the middle of something, solar system - the sun and planets that move around it, convince - to make someone believe that something is true,
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Upstream 2 unit 10a
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