Rainbow plane offsets

When we had a look at the 'rainbow effect' of planes in flight we mentioned that the offsets of the different images were a result of both the plane's movement and the movement of the satellite taking … [Read more...]

Watching sand dunes move with Google Earth

We recently got the idea of trying to see if we could see sand dunes moving using Google Earth historical imagery. The biggest problem is that for the best results we needed frequent satellite imagery … [Read more...]

How often is Google Earth imagery updated: Europe

We recently had a look at the frequency of imagery updates for the continental US. Today we are doing a similar analysis for Europe. As with the US, Europe has a lot of aerial imagery gathered by the … [Read more...]

More about processing Sentinel imagery

We recently had a look at how to process Sentinel imagery using GIMP. GEB reader 'DJ' asked in the comments if the geodata supplied with the imagery can be used to automatically align the imagery in … [Read more...]

China’s South–North Water Transfer Project

We recently came across China's South–North Water Transfer Project. China has more water in the south than the north and water shortages are becoming a problem in the north. The South–North Water … [Read more...]

Processing Sentinel imagery with GIMP

Sentinel imagery can be thought of as Europe's equivalent of Landsat imagery. It is freely available just like Landsat imagery, but higher resolution. Today we are having a look at how to process it … [Read more...]

How often is Google Earth imagery updated: The continental US

We are often asked how often Google updates the imagery in Google Earth. The answer depends on where you live and can be anywhere from once a week to never. For much of the world, there are certain … [Read more...]

Multi-coloured snow

Last week Google gave the Google Earth global mosaic a makeover. When we were having a look at some of the minor issues with the new mosaic we noted some odd patterns in Chandeleur Sound, Louisiana. … [Read more...]

Why “Google Jupiter” would have to be different

The big astronomy news this week is the arrival of NASA's Juno probe at Jupiter-orbit after a five year flight. Of course, for us Google Earth fans, the first question is 'we have Google Earth, Google … [Read more...]

Making use of the Google Earth API

Although the Google Earth API was officially deprecated back in December 2014, Google chose not to shut it down on schedule in December 2015 and have instead kept it running. Although you should not … [Read more...]