- 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 EarthMeteorites
- isotope — atoms of one element with different massIsotopes, isotope systems
- scientist — a person who studies scienceScientists
- researcher — a person who studies and checks factsresearchers
- 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?
Related articles
New oral drug approved for sleeping sickness
European regulators approved Acoziborole, a single-dose oral treatment for sleeping sickness after successful trials in the DRC and Guinea. Sanofi will donate doses to WHO, but national approvals and vector control are still needed to reach elimination goals.
Inequality and Pandemics: Why Science Alone Is Not Enough
Matthew M. Kavanagh says science can detect viruses and make vaccines fast, but rising inequality makes pandemics worse. He proposes debt relief, shared technology, regional manufacturing and stronger social support to stop future crises.
Decolonising science: translating science into African languages
A radio programme explores how using African languages and local knowledge can make science easier to understand. Reporters and experts discuss translation challenges, practical steps and how communities can help shape scientific language.
