Well, more accurately than what can be fit in the title. The Milky Way collided with a dwarf galaxy millions or billions of years in the past. It is now slowly eating that dwarf galaxy stripping it of mass and adding it to itself. It just happens that our system is presently located somewhere within the crossroads between two galaxies, the milky way and the Sagittarius dwarf galaxy.
This is from an article from a few years ago:
Interesting enough, this could also explain the mystery of why our star system is on its side (the milky way should appear horizontally, but it is angled close to being vertical). This could be the result of some sort of turn taking place to alter our direction by some gravitational force coming towards the Milky Way disk from a perpendicular direction; from the dwarf galaxy.
This is from an article from a few years ago:
Interesting stuff; this means that there could be a large amount of debris, both matter and energy, from another galaxy falling into our system as we speak.“For only a few percent of its 240 million-year orbit around the Milky Way galaxy does our Solar System pass through the path of Sagittarius debris,” Majewski said. “Remarkably, stars from Sagittarius are now raining down onto our present position in the Milky Way. Stars from an alien galaxy are relatively near us. We have to re-think our assumptions about the Milky Way galaxy to account for this contamination.”
Interesting enough, this could also explain the mystery of why our star system is on its side (the milky way should appear horizontally, but it is angled close to being vertical). This could be the result of some sort of turn taking place to alter our direction by some gravitational force coming towards the Milky Way disk from a perpendicular direction; from the dwarf galaxy.
-Insert Inspiring Quote-
