Exoplanets and Extremophiles: Searching for Life Beyond Earth
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Questions and Answers

What are the 5 main factors scientists believe are essential for life on other planets?

  • Nitrogen, phosphorus, oxygen, sunlight, and water
  • Carbon, hydrogen, nitrogen, oxygen, and water (correct)
  • Oxygen, helium, carbon dioxide, nitrogen, and phosphorus
  • Sunlight, methane, carbon dioxide, sulfur, and water
  • What is an exoplanet?

  • A celestial body that orbits a star outside of our solar system (correct)
  • A dwarf planet in a distant galaxy
  • A moon that orbits a planet outside of our solar system
  • A rogue planet that travels through space without orbiting any star
  • What is the habitable zone? What is another name for it?

  • The region in space where alien life is most likely to exist. Also known as the Green zone.
  • The area around a black hole where extreme conditions support life. Also known as the Extreme zone.
  • The area around a star where liquid water could exist on the surface of a planet. Also known as the Goldilocks zone. (correct)
  • The zone in a galaxy where habitable planets are clustered. Also known as the Life zone.
  • Why do you think extremophiles are usually so small?

    <p>Because they have evolved to be small in order to survive harsh conditions</p> Signup and view all the answers

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