Part 5/15:
The presentation emphasizes that our solar system is not on a flat, inert plane but instead exhibits complex, oscillatory motion as it orbits the Milky Way’s center at approximately 515,000 miles per hour. This motion, combined with the Sun’s traversal through the galaxy’s dense midplane every 27 to 30 million years, is thought to increase the likelihood of encountering cometary debris from the Oort Cloud—an immense, distant reservoir of icy bodies.
These periodic galactic crossings may explain cyclical mass extinctions and impact events. The science by researchers like Rampino et al. supports this, indicating that Earth passes through thicker regions of cometary and dark matter clouds roughly every 27 million years, correlating with extinction episodes.