天文学 TPO41-L4 Exoplanet

TPO41-L4

Exoplanet




  1. What do the speakers mainly discuss?
  • A. Whether life could exist outside a star’s habitable zone
  • B. Techniques used by researchers to detect exoplanets
  • C. Exoplanets that share certain characteristics with Earth
  • D. Characteristics of several recently discovered red dwarf stars

 

  1. What does the professor say about the host star Gliese 581?
    [CHOOSE 2 ANSWERS]
  • A. It is larger than the Sun.
  • B. It is cooler than the Sun.
  • C. It is a relatively young star.
  • D. It is relatively close to Earth.

 

  1. What does the professor suggest about life on other planets?
  • A. It most likely does not exist.
  • B. It probably will not be discovered in the near future.
  • C. It probably would not be similar to life on Earth.
  • D. It could possibly be found even on gas giants.

 

  1. What did researchers discover about the planet Gliese 581d when they reexamined it?
  • A. It is made entirely of rocks.
  • B. It is not able to support an ocean.
  • C. It is smaller than previously thought.
  • D. It is closer to its host star than previously thought.

 

  1. Why is the planet Gliese 581e unlikely to support carbon-based life?
  • A. It is too hot.
  • B. It is too small.
  • C. It is covered in ice.
  • D. It is made entirely of gas.

 

  1. What does the professor find most exciting about the discovery of the planet Gliese 581e?
  • A. It showed that some exoplanets have an atmosphere like Earth’s.
  • B. It helped researchers better understand exoplanets’ orbits.
  • C. It showed that the technology exists to detect small exoplanets.
  • D. It proved that some stars’ habitable zones are larger than once thought.


答案:
C BD B D A C

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