In 2020, the world celebrated two decades of continuous human presence aboard the International Space Station (ISS). As an orbiting laboratory that has provided astronauts with a view of Earth from outer space, the ISS may not seem very similar to other space innovations like CubeSats and NASA/USGS’s Landsat. But all of these devices are satellites: objects orbiting objects larger than themselves. Satellites can be natural (like the moon and planets, including Earth) or human-made (like the ISS). Joined by two experts in this outer-worldly technology, host Alok Patel explores how satellites have shaped our understanding of the modern world, including the Landsat program’s effort to create a space-based record of the surface of the Earth, and what lies ahead at the intersection of justice and space.

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