How Did the Universe Begin?

Create Your Own Timeline of the Universe

Astronomers have figured out that the universe is about 13 billion years old! (We’d better skip the candles on the birthday cake, don’t you think?)

Scientists have also figured out the approximate times when different cosmic events happened—when our galaxy was formed, when our planet was formed and so on.

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If you do not see this game, you need to download the Shockwave Plug-in. To do this, go to Macromedia.