Yesterday marked the 40th anniversary of Landsat, the longest-
running program focused on acquiring satellite photos of Earth.
The Landsat satellite snaps one completely photo of the Earth’s
surface every 16 days, and the petabytes of photos collected
over the years have given scientists a view into how our
planet’s surface has changed over time, whether by natural or
human-caused means. Google is currently working to make the
photos easily enjoyable by the general public by transforming
them into time-lapse videos. Here are a few of the time-lapse
created so far: Deforestation of the Amazon Growth of Las Vegas
Drying of the Aral Sea You can dive into the data yourself by
visiting Google Earth Engine.