Hacker News Reader

> Summed over the entirety of its orbital path over the last 500 Myr, based on the new weighted symmetrical model, we find that the Sun has spent ∼60% of its time in the spiral arms

This is a statistical observation. In any case, do you have a source for your assertion?

http://saj.matf.bg.ac.rs/187/pdf/043-052.pdf

View on HN

My prediction is based on their newly weighted symmetrical model given at figure 2.

All previous extinction events are when the sun is in the galaxy arms, and we are currently entering one of them.

Pardon me. Could you point me to a source showing we are entering one of them?

http://i.imgur.com/u69Qd6Y.png

Yellow dot is where we are right now, as you can see we are entering one of the black lines.

6 blue dots represent the known mass extinctions, they all lie on black lines.

5 orange dots represent proposed new mass extinction events proposed in the paper.

Reply on news.ycombinator.com