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A quasar can slow star formation in nearby galaxies — Level A1 — a spiral shaped object in the middle of a dark sky

A quasar can slow star formation in nearby galaxiesCEFR A1

28 Feb 2026

Level A1 – Beginner
2 min
72 words
  • A very bright black hole shines in deep space.
  • The black hole is active and sends radiation outward.
  • Its strong radiation can reach nearby galaxies far away.
  • Nearby galaxies show less new star formation than usual.
  • Radiation and heat can break cold gas in clouds.
  • Cold gas is the fuel that makes new stars.
  • Breaking the gas stops star birth for some time.
  • Scientists use telescopes to study galaxy systems nearby now.

Difficult words

  • black holeA space object with very strong gravity.
    The black hole
  • radiationEnergy that moves out from a source.
  • galaxyA large group of stars and gas.
    galaxies, Nearby galaxies
  • formationThe process of making something new.
  • telescopeA tool to see distant things in space.
    telescopes
  • fuelMaterial used to make energy or power.

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

Discussion questions

  • Have you ever looked at the stars?
  • Would you like to use a telescope to see space?

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