Question

how has our galaxy started?
and when it will end?​

Answer 1

Answer:

Four billion years from now, our galaxy, the Milky Way, will collide with our large spiraled neighbor, Andromeda. ... For eons, the pair will continue to come together and fly apart, scrambling stars and redrawing constellations until eventually, after a billion or so years have passed, the two galaxies merge.

Explanation:

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Answer 2

Answer:

galaxies were born when vast clouds of gas and dust collapsed under their own gravitational pull, allowing stars to form.

Four billion years from now, our galaxy, the Milky Way, will collide with our large spiraled neighbor, Andromeda. The galaxies as we know them will not survive. In fact, our solar system is going to outlive our galaxy.