🎧 Listen to today’s story
📚 Key Words
| Word | Meaning | 中文 |
|---|---|---|
| matter | Everything around us that we can touch and see. | 物质 |
| antimatter | The opposite of matter. | 反物质 |
| disappear | To go away so that you cannot see it anymore. | 消失 |
| scientist | A person who studies science. | 科学家 |
| heavy | Weighing a lot. | 重的 |
| universe | All of space and everything in it. | 宇宙 |
| explode | To burst or blow up with a loud noise. | 爆炸 |
| energy | Power that makes things work, move, or grow. | 能量 |
📖 Read the story
Everything we see is made of matter. Your toys, trees, and dogs are all matter. But there is also something called antimatter. It is the opposite of matter. When matter and antimatter touch, they both disappear. Long ago, there was a lot of antimatter in space. Today, we cannot find it. Why did it go away? Scientists think tiny black holes can explain this. A black hole is a very heavy place in space. It pulls everything inside itself. When the universe was new, many tiny black holes were born. They were only as heavy as a small car. Soon, these black holes exploded. The explosions made a lot of energy. This energy made more matter. Because of this, stars, the Earth, and humans could live and grow.
✏️ Answer the questions
1. What happens when matter and antimatter touch?
- A.They make a star.
- B.They both disappear.
- C.They get very cold.
- D.Nothing happens.
2. How much antimatter can we find in space today?
- A.Almost none.
- B.A very large amount.
- C.More than matter.
- D.The same as before.
3. What is a black hole?
- A.A small, light star.
- B.A toy in space.
- C.A very heavy place in space.
- D.A new kind of planet.
4. How heavy were the first tiny black holes?
- A.As heavy as a dog.
- B.As heavy as a small car.
- C.As heavy as the Earth.
- D.As heavy as a toy.
5. What did the explosions of the black holes make?
- A.More antimatter.
- B.Heavy cars.
- C.A lot of energy.
- D.New toys.