9 Biggest Killers In Space
7. Galactic Collisions & Rogue Stars
What is it? Literally what it sounds like: Galaxies crashing through each other, and stars that are thrown in the process launching toward other celestial bodies. Is this common? Can I hide under a table to survive? Thankfully, not as much anymore... but we are destined to crash with our neighbor, Andromeda! That should be a spectacular light show in the sky! What this also produces, argued in heated debates, are rogue stars. Has this happened before? Can it happen again? The Milky Way and Andromeda are going to be annihilating their galactic orbits and the orientation of virtually every system in their gravitational pull in 3.75 billion years. Technically before our sun becomes a red giant. There are debates scrutinizing the distances between stars and their systems preventing the crashing of actual objects against others in this scenario. Many physicists argue the billions of kilometers existing between these stars are too great; others argue that the gravitational forces will act like a powerful wave of water coming in with the tide, pushing stars and planets all over the place. Chances are that this cosmic event will easily generate the gravitational forces needed to shear apart all kinds of celestial bodies, and launch others from orbits (like stars). It will be a celestial pinball game. This type of event was much more common when the early universe was forming and the earliest galaxies had greater proximity toward one another. However, as we're slowly expanding farther away from our neighboring galaxies, especially from those that may already have had possible previous collisions: eventually they'll be so far apart that there won't be any others to collide with as they've expanded infinitely away from each other.