[Outbackmanyep]

Hey all!

As i am more interested in comets than anything else, i was reading a book on comets and one section i read was going on and on about D:H ratio's measured in comets.

Deuterium to Hydrogen ratio....

Can anyone enlighten me on why anyone would want to know what D:H ratio's are??

I'd like to understand why comet scientists would want to know this for!

Appreciate any answers!
Cheers!