Satellites help Google Earth and a new Timelapse feature go back in time

By relying on satellite imagery, Google Earth is now allowing the public to observe the Earth and its evolution over a period of nearly 40 years. New feature called Timlapse.

24 million is the number of satellite images since 1984 that have been used in the new Google Earth update. It’s called Timelapse, and it allows you to explore several geographic regions in chronological order.

The images mainly come from NASA and Landsat program From the United States Geological Survey, as well as satellites The Sentinel of the Copernicus Program. Funded by the European Commission, this program aims to observe the Earth using high-resolution images captured by two satellites (Sentinel-2A and Sentinel 2B) placed in the same 180-degree orbit. It makes it possible to get new images of the same area every 5 days, at a resolution of 10 m. Valuable data for the study of the Earth, which through Google Earth will allow everyone to explore its modifications, “whether they are natural or caused by humans, in addition to their impact on the climate,” explains Maurice Borgoud, head of the science and applications and climate division of the Earth Observation Programs division at the space agency European.

With Timelapse, Google Earth offers its users to visualize our impact on the planet by going back in time. Deforestation, for example, as well as modification of coastlines, or the insane growth of cities, are evident.

To use Google Earth Timelapse on the web, simply contact us on the “Rudder” icon, then “Timelapse in Google Earth” (at the bottom of the screen) and finally type the name of the desired location into the search field “Explore the world …”

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Ciel & espace # 576 - April - May 2021. Article: Water and Life, an extremely rare duo in the universe.  © C&E

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