Summary
Scientists have found that it is now in the middle stage of its life.
Its rate of creating new stars has been falling for about 40 million years.
Key Points
4 points1
Andromeda is a nearby galaxy.
2
It has reached middle age for a galaxy.
3
Star formation is slowing down.
4
The slowdown has lasted roughly 40 million years.
New Words to Learn
5 wordsAndromeda
a large group of stars far away
galaxy
a huge system of stars and space material
middle age
the period between youth and old age
star formation rate
how quickly new stars are made
million
one followed by six zeros
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