Shards of Earth

Huge alien beings known as Architects have the power to wipe out planets, and no one knows why they do it. Enter the crew of the Vulture God, a salvage ship that discovers evidence of the Architects returning after 50 years of peace in the galaxy.

I loved Tchaikovsky's Children of Time so I was really excited to read this one. However I found the first third to first half to be very dense on information and quite hard to keep up with. Luckily if you stick through with it, it does get better.