Sentinel-2 overtakes Landsat in scientific litterature

Copernicus In English Landsat Sentinel-2

Olivier Hagolle, 20 février 2026

The OpenAlex is a new but already very convenient open database to survey scientific litterature. For a coming blog post on CNES Datacampus site, I studied the proportion of papers using only one of the Sentinel-2 or Landsat missions, and papers using both of them, in 2025. And what stroke me is that Sentinel-2 just overtook Landsat in the number of papers !

To do that, I used the following requests : 

https://openalex.org/works?page=1&filter=title_and_abstract.search:Landsat+and+Satellite
https://openalex.org/works?page=1&filter=title_and_abstract.search:Sentinel-2+and+Satellite

I had first omitted to search for the « satellite » keyword, but figured out that dozens of papers on both earth observation missions had been published before 1970, and that other experiments must have had the same names. Adding « Satellite » probably removes some genuine papers about these two fantastic missions, but even without that keyword, Sentinel-2 was still ahead of Landsat in 2025.

Landsat has been the reference earth observing satellite since the 70’s, and the cumulated number of publications is still the double of Sentinel-2, but what an achievement it is for Europe and the Copernicus Program in just 9 years !


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