General Category > Astronomy & Science

The amount of stars in our Milky Way Galaxy

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Arata:
Remember the topic I posted a while back about both the Milky Way & Andromeda being larger than scientists once thought, and us holding the crown of the largest galaxy in our local group? Well, shortly after that, I thought, "If both galaxies are larger than thought, then what is there precise number of stars?
I know that both galaxies now have more than 5 trillion stars orbiting their center, but what is the right amount?

Here is what I believe.

The Milky Way was thought to have about 400 billion stars.
Now 15 times larger, around 1.5 million light years across.

4x15=60
60 trillion stars
I personally believe that is too many, so I'll say from 10 to 40 trillion stars.

Andromeda was once thought to have 1 trillion stars.
Now 5 times larger, around 1 million light years across.

1x5=5
From 5 to 10 trillion stars.
I

Bla:
Interesting. But why do you believe 60 trillion is too many and that 10-40 sounds more realistic?

witold:
Then. We will "eat" Andromeda  ;D

monmarfori:
Andromeda has only 700 billion stars.

Arata:
No it doesn't.
 :P

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