Are we alone in the universe?

Key questions on the universe and if we are alone.

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1. if life is common in the universe, why is it difficult to find any signs of life?

  • Our telescopes are not powerfull enough to find life
  • There is no life in the Milky Way
  • global warming eventually killed life in all other planets, leaving us till last!!
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Other questions in this quiz

2. The habitable zone is the region of space around a star where the surface conditions of any planets could be favourible for life to evolve?

  • True
  • False

3. Why do scientists take an interest in mars and europa when searching for life?

  • why not?
  • Both Mars and Europa have"Earth-like" conditions
  • previous fossil samples from both mars and europa have shown signs of life

4. how do astronomers investigate the chemical composition of distant planet and stars?

  • spectroscopy
  • comparing the composition to the earth
  • chromatography

5. what is the signature of life?

  • evidence from observations and measurements that life has existed in the place that is being studied
  • a signature you write on paper

Comments

Robert Lock

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Enjoy your 5 stars :]

Imaad Shaikh

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i will

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