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By 2021, roughly how many dedicated Earth-observation satellites were operating?

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Satellite by the numbers

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about 12,952

About how many satellites were orbiting Earth as of mid-2025?

The number of satellites in orbit has exploded in recent years thanks to cheap small satellites and mega-constellations.

Source: Wikipedia, Satellite (2025) en.wikipedia.org

about 1,559

As of mid-2025, about how many satellites did Russia operate?

Russia operates the second-largest satellite fleet, though it's still far smaller than the U.S. total.

Source: Wikipedia, Satellite (2025) en.wikipedia.org

Planet Labs

As of 2021, which company operated the largest fleet of Earth-observation satellites?

Planet Labs built its business around operating more small imaging satellites than any other commercial provider.

Source: Wikipedia, Satellite (2021) en.wikipedia.org

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How does SatelliteSurvey.com work?

Each question asks you to guess a real number about satellites. After you answer you see how everyone else guessed, then the real figure and where it comes from.

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Four stats and one opinion poll. A correct guess earns 100 points plus up to 50 for speed, with a combo bonus for answers in a row. The range next to the right answer earns 40. Opinion polls earn 25 for having your say, and nailing every stat adds 150.

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