ANSWERS

TASKS 1-3

 We tend to think of stars as having been around for a very long time. In fact our Sun is billions of years old. But new stars, like those in the Pleiades, are continually being born.

The Pleiades stars are only about 25 million years old. If the dinosaurs ever gazed at the night sky...they wouldn't have seen the Pleiades, which hadn't been born yet!

The Sun is about 4.5 billion years old. But the Hubble "deep-field" galaxies are among the most ancient and distant objects we can see in the sky. The light from them has taken about 10 billion years to reach us. So they were born long before our Sun.

On the other hand, the Hubble deep field galaxies are young galaxies! They formed only a few billion years after the Big Bang...so many of the stars in these galaxies may be younger than our Sun. We're looking at an "old" image of young objects!

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