Wow...about two weeks ahead of schedule! Apple is my biggest retail channel at 42% of sales vs. 35% for Amazon. It will be a few more days before it's up on Barnes and Noble (18% of sales per the latest reporting). It's also just shown up at the Kobo Bookstore. Koby, Sony and Smashwords represent about 5% of my sales in aggregate.
Regarding the book....It's a little coincidental that there's been some news which relates to the story line(s) in the book. For one, there was news that an ocean of water under an ice cap had been confirmed for Europa, one of the moons of Jupiter. (Frankly, the news was a little stale; it's been really believed for at least five years). Secondly, we had news of another asteroid missing the earth. I know I used a comet in the book. Comets present a much higher risk to the earth, albeit despite a much lower potential for occurrence.