Molecules and the possibility of life in outer space | 14-16 years

A photograph of the Orion Nebula, showing stars surrounded by a vast interstellar molecular cloud of gas and dust.

Source: © Shutterstock

Explore the molecules found in space as clues to the potential existence of extraterrestrial life, using this lesson plan with activities for 14–16 year olds.

In this activity, students use photographic images, discussion and a team exercise to explore some of the molecules found in space, leading to discussion of the possibility of life existing elsewhere in the universe. Students also reinforce their ability to explain that:

  • New substances are formed when atoms combine.
  • Substances with covalent bonds may form simple molecular structures.
  • The rates of many reactions depend on the frequency and energy of collisions between particles.

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