Eyeing Iran nuclear site history with Google Earth

Kathryn Cramer says,

Ogle Earth's Stefan Gens found some new high-resolution imagery of Iran's nuclear processing facilities and turned them into an overlay: New satellite imagery of Iran's nuclear sites – now on Google Earth.

And Stefan explains,

The Institute for Science and International Security (ISIS) has released new commercial imagery of Iran's nuclear enrichment facilities taken by DigitalGlobe just a few weeks ago. The images are in a PDF report by Paul Brannan and David Albright, the latter an ex-UN arms inspector and nuclear proliferation expert. (ISIS, whose motto is "Employing science in the pursuit of international peace" has impeccable non-partisan credentials.)

The PDF is fascinating, but the main images lack easy historical comparisons. Luckily, Google Earth already has very high resolution imagery of both the Natanz and Isfahan sites from a few years ago, also taken by DigitalGlobe. What I've done is repurpose the images from the PDF, which are annotated, as overlays on Google Earth, so that we can see the progress in the construction at both sites over the past few years.