Here is a very interesting article about how galactic winds could be responsible for galaxy growth and the atomic matter in galaxies.
The article states that up to half of all the matter in our Milky Way Galaxy could have come from other smaller galaxies. Ultimately that would mean that half of the atoms that make each one of us up would have come from other galaxies!
|Raw material for future stars in the form of gas and dust abound in our Milky Way Galaxy |
as can be seen in this picture taken at Shenandoah National Park
Credit: Greg Redfern
We also know that galaxies grow by collisions with other galaxies which forms a new galaxy in the process. We see this happening throughout the Universe, including our own Milky Way Galaxy. In about 4 billion years the Milky Way and Andromeda galaxies will collide to ultimately form a new galaxy - Milkomeda.
Additional research will be conducted to try and prove the results of this supercomputing result.
Sky Guy in VA