A1 BeginnerTreesSpaceScience

The Moon Trees: An Astronaut Took Seeds Around the Moon… and They Grew

Part of: Animal Heroes & Amazing Trees

In 1971, the astronaut Stuart Roosa took small bags of tree seeds around the Moon. Back on Earth, the bags broke open. Would the seeds still grow? They did — and you can still see Moon trees today. Learn five A1 words and can / can't with this true story.

Coming 8 December 2026, 3:00 pm New York time

Speed

Transcript

Tap a time to jump to that moment. Highlighted words have a meaning: tap them. Words in bold show today's grammar.

Step 3

Words from the story

Say the word, guess its meaning, then flip the card. Keep the ones you know, and practise the rest again.

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words learned
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Grammar in the story

can / can't + verb

We use it for: to say what is possible or not possible now — can + verb, no -s and no to

  • A seed grows → A seed can grow
  • I see → I can see
  • A tree can't walk.

From the story

  • You can still see Moon trees today.
  • Fish can swim, but they can't walk.

Find it in the story 9 times

Your turn

  1. Birds   fly.

  2. A tree   walk.

  3. Today, you can   Moon trees in many parks.

Step 4

Story Challenge

10 quick rounds: choose, fill the gap, build the sentence and match the words. Answer in a row to build a streak and earn bonus points.

  • 10 questions
  • About 4 minutes

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Take it further

Before you watch: Do you have a favourite tree? Where is it? Do you think seeds can grow after a trip to space?

After you watch: Write three sentences with can or can’t. For example: A seed can grow into a tree. I can see a tall tree from my window. Fish can’t walk.

Think about it: A small bag of seeds went around the Moon and still grew. What small thing can you plant or start today?

Did you know? Stuart Roosa’s job was called smokejumper: firefighters who jump from planes with a parachute to reach forest fires. He took about 500 seeds of five types of trees (some sources say more): loblolly pine, sycamore, sweetgum, redwood and Douglas fir. Scientists also kept the same kinds of seeds on Earth. Years later, they found no difference between the Moon trees and the Earth trees! Most Moon trees were planted in 1975 and 1976, for the 200th birthday of the United States. Moon trees also went to the White House, and to Brazil, Switzerland and Japan. On Artemis I in 2022, about 1,000 new seeds travelled around the Moon — this time with giant sequoia instead of redwood.

Image credits:

  • Public domain, NASA: the Apollo 14 launch, 1971; Stuart Roosa, 1970; the Apollo 14 command module, 1971; the Moon tree at NASA Goddard — Pat Izzo; Orion and the Moon on Artemis I, 2022; the Artemis I seed bags — Cory Huston; an Artemis I Moon tree — Aubrey Gemignani
  • CC0, Wikimedia Commons: the Moon tree and its plaque at Core Creek Park, Pennsylvania — Plefkag

The other scenes in the video are illustrations.

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