Day 7 – The First Stars In The Milky Way

Imagine if our world had a diary and on the interesting days, someone pulled out a big book and wrote about it.

the bookDay 7 was such a day.

It’s 11 billion years ago and our first stars have just reached their 1 billionth birthday. On average, that’s still childhood.

Aside from the twinkling variety, how many types of stars are there? Seems like a fair question and the answer is a very scientific one too, ‘lots’.
Actually, most of the stars are not alone with twins being the most common setup in most galaxies and a fair helping of triplets too. This is not surprising when you know how the stars get going in the first place.

It is fairly widely known that stars form from clouds of gas but we tend to think of this as a ‘one cloud – one star’ event. In reality, the clouds that start the process are so vast, as they collapse under the force of gravity, the core is usually about 100 times more massive than our Sun. This core then usually fragments into smaller clumps, each one with the potential to become a star. (No, not like an audition).
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