Rosetta probe discovers sinkholes on comet surface

Paper from Nature (free to read): http://www.nature.com/articles/nature14564.epdf?referrer_acc...

The "eggs" remind me of the round stones found in glacial mills

http://www.gletschergarten.ch/Garten.4.0.html http://www.igsoc.org:8080/journal/1/9/igs_journal_vol01_issu...

I keep wondering if Philae is going to be blown off the surface by something like one of the geysers that they mention in the paper.

Plot twist: They really are dinosaur eggs, launched as debris from Earth during the impact that wiped them out.