[Liberty1970]

Unless man intervenes with science and technology, there's a high probability the planet won't be around that long. Right now we're in an arm of our galaxy that isn't that crowded with stars and other cosmic stuff. Due to our solar system's rotation and other systems doing the same in about fifty thousand years we will be in a heavy traffic area.

Can you provide a reference? What are the implications for life in general in a denser region?

I've read that life could not exist in the core of our galaxy, but am not familiar with similar arguments (assuming they are similar) for intermediate regions of density outside the core. And extrapolating backward, how long would it be in conventional timescales since we last emerged from such a region? 50kya is a drop in the buck of deep time.

[null and void]

*shrug* we’ve been through it before. End of the Permian, end of the Cambrian, end of the Cretaceous.

No biggie...

[Hillarys Gate Cult]

Heard that number before the web in about 1994. What little I could find in books about it did support it.

What it would mean to life would be large asteroids would be the least of a planet's worries. Collision with other planets would be a constant hazard and stars would absorb each other. To an outside observer it would resemble a cosmic game of billiards.