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Cosmic Frontiers: SETI, Moon Bases, and the Road ...

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    Test your knowledge on the search for extraterrestrial intelligence, the age and structure of the universe, and humanity’s plans for lunar bases and M...
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  • What are the professional occupations of Seth Shostak and Alexandra Barnett?
    Political leaders drafting treaties for future space resources
    Medical doctors studying muscle loss inside space stations
    Astronomers who believe intelligent life exists elsewhere
    Mechanical engineers who construct imaging systems for telescopes
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  • According to astronomers in Passage 4A, what is the estimated age of the universe?
    Approximately 12 billion years old
    Approximately 20 million years old
    Approximately 4.5 billion years old
    Approximately 100 billion years old
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  • Why does the age of the universe lead astronomers to think intelligent life exists elsewhere?
    12 billion years is too long for only one planet to develop life
    Older planets contain higher concentrations of water
    Older galaxies have completely stopped expanding
    Tme moves faster near the center of older solar systems
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  • What structural fact about space did data from the Hubble Telescope reveal?
    The Sun is shrinking at an accelerating metric every century
    Every known star system contains precisely eight planets
    There are at least 100 billion distinct galaxies in the universe
    Radio waves move faster across empty regions than dust fields
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  • How many individual stars are estimated to exist specifically within our Milky Way galaxy?
    Exactly 12 billion stars
    Around 20 million stars
    At least 100 billion stars
    Precisely one million stars
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  • Why was searching for signs of extra-terrestrial intelligence difficult until recently?
    Cloud covers on Earth blocked all outgoing laser transmissions completely
    International laws completely banned sending radio signals into deep space
    Powerful telescopes were needed to identify small, Earth-sized planets
    The universe was expanding too quickly for imaging tools to track objects
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  • What conditions make newly identified small planets candidates to harbor intelligent life?
    They must be located completely outside of any mapped solar system
    They must operate inside an orbit that eludes tracking rovers
    They must be similar to Earth and close enough to a star
    They must have frozen surface ice layers thicker than Martian plains
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  • According to Seth Shostak, why have beings from outer space probably NOT visited Earth?
    They are deliberately avoiding contact until our tracking arrays improve
    Aliens lack the materials required to construct spaceships
    Our atmosphere contains chemical components that are lethal to them
    The distance parameters separating planets throughout space are too great
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  • Through what methods might intelligent beings establish contact with Earth?
    Radio signals or sudden, short flashes of bright light
    The distribution of organic biological material inside space rocks
    Altering the geometric orbital tracking patterns of our home satellites
    Subterranean sound vibrations generated through lunar crust layers
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  • What is Seth Shostak's prediction timeline for establishing contact with other life forms?
    Within the next 10 years
    Within the next 20 years
    Within the next 50 years
    Not for at least another century
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  • Why did scientist Stephen Hawking argue that humans must move into space?
    To ensure our future is safe by establishing independent colonies
    To exploit valuable minerals found beneath Martian surface zones
    To build massive arrays that can shield Earth from solar flares completely
    To directly confirm his mathematical data regarding the age of galaxies
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  • Which group of countries is currently planning to send astronauts back to the moon?
    The United Arab Emirates, Egypt, and Sweden
    Brazil, South Africa, Turkey, and Colombia
    Australia, Canada, Kenya, and Singapore
    The United States, Europe, Russia, China, and Japan
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  • What is the timeline target for creating space stations on the moon?
    Within the next 20 years
    Within the next 5 years
    Within the next 10 years
    Not for at least 35 years
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  • What primary purpose will lunar space stations serve in exploration phases?
    To prepare humans to visit and later live on Mars
    To systematically manufacture cheap building equipment for sky towers
    To capture solar radiation particles and beam clean energy back to Earth
    To monitor and tax automated commercial shipping channels globally
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  • Who is Robert Zubrin, according to the informational details provided in Unit 4B?
    A rocket scientist who designs spaceships and wants to colonize Mars
    The chief executive officer of an international food packaging company
    A cognitive scientist studying how classical music affects memory profile
    A nature photographer who captures pictures of rare insects inside forests
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  • What is one benefit of sending people to Mars according to Robert Zubrin?
    It will reduce the cost of building advanced radio telescope machinery
    It will prove that theoretical asteroid strike predictions are false
    It will allow extra-terrestrial beings to use our database networks safely
    It allows whether humans can live on other planets
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