Comet 3I/Atlas travels from deep space

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The comet 3I/Atlas came from outside our solar system. It is very old, perhaps 11 billion years old.

Scientists used a special telescope in Chile to watch it. The comet zoomed past Earth and is now far away.

The comet's water has much heavy hydrogen inside it. This shows it formed in a very cold, dark place.

Our sun formed with many other new stars around it. This comet's home star was likely alone and much colder.

Two other objects from space visited us before this one. These visits help us understand how planets first formed.

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How old is the comet 3I/Atlas?

It is perhaps 11 billion years old.

Where did scientists watch the comet?

They used a special telescope in Chile.

What does the heavy hydrogen in the comet's water indicate?

It shows the comet formed in a very cold, dark place.

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