Astronomers Study Planetary Collisions in Young Star Systems
In the app: the whole story at your level, listening, the quiz and the word cards.
The same story at six levels
How the first sentence reads at every level, from A1 to C2.
- A1
Scientists looked at 21 young star systems.
- A2
Scientists studied 21 young star systems.
- B1
Astronomers have used NASA's James Webb Space Telescope to study 21 young star systems.
- B2
Using NASA's James Webb Space Telescope, astronomers studied 21 young star systems to learn about planetary collisions.
- C1
Scientists think that Earth's Moon formed after a Mars-sized object crashed into Earth early in the solar system's history, and studying distant debris disks helps researchers understand how rocky planets form and evolve.
- C2
The birth of a rocky planet is far from a gentle process; it is a violent, chaotic affair.
Key words
Words from the B1 text, with their meaning.
- debris
- broken pieces left after something is destroyed or damaged
- collision
- an accident that happens when two vehicles or objects hit each other with force
- estimate
- to guess or calculate the cost, size, or value of something
- rare
- not common or frequent; very unusual
- impact
- the force or action of one object hitting another
- observe
- to watch carefully the way something happens or the way someone does something
Rewritten with AI from facts reported by NASA. Read the original for the full report.