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Earth formed from inner solar system material (Level A1) — two planets in the sky with blue flames coming out of them

Earth formed from inner solar system materialCEFR A1

10 Apr 2026

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Adapted from ETH Zurich, Futurity • CC BY 4.0

Photo by NASA Hubble Space Telescope, Unsplash

Level A1 – Beginner
2 min
73 words
  • Scientists study how the Earth formed from space rocks.
  • They examine many different types of meteorites from space.
  • Meteorites come from inner and outer parts of the system.
  • A team at ETH Zurich re‑examined isotope data carefully.
  • Isotopes are atoms of the same element that differ.
  • The researchers used many isotope systems and methods.
  • Their results show Earth came only from inner material.
  • Jupiter likely acted as a barrier to outer rocks.

Difficult words

  • meteorite — a rock from space that falls to Earth
    Meteorites
  • isotope — atoms of one element with different mass
    Isotopes, isotope systems
  • scientist — a person who studies science
    Scientists
  • researcher — a person who studies and checks facts
    researchers
  • barrier — something that blocks movement or passage
  • material — substance or matter used to make things

Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.

Discussion questions

  • Would you like to be a scientist?
  • Have you ever seen a rock from space?
  • Can a big planet block rocks from space?

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