Origin of Meteor Shower

I'm sure you know what a meteor shower is. But do you know how it occurs? This is a request from a Scholar, but I'm in way over my head here...
Since it's about astronomical objects, why not talk to Nostradamus in Marseille?

Type	Adventure
Difficulty	⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐
Required Skill	Recognition 15 Astronomy 17 French 1
Source	London Adventure Mediator
Gold Reward	395,000 Đ
Gold Advance	30,000 Đ

Details

1. Marseille

Nostradamus

2. Oxford

Professor

Norwegian Sea

Discovery

Comet Encke

Note

• You need to have the port permits required to access each location above.
• If you are unsure of the location of the next NPC in town, order a drink in a Tavern in the same town.
• You can discover things with 2 skill levels below.