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Astrogeology Analysis Ready Data
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Anatomy of a STAC item

The SpatioTemporal Asset Catalog (STAC) specification provides a common language to describe a range of geospatial information, so it can more easily be indexed and discovered. A ‘spatiotemporal asset’ is any file that represents information about the earth any planetary body captured in a certain space and time. About STAC

This tutorial is a little less hands on than the other tutorials. At the end of this tutorial, you will know the differences between a STAC catalog, collection, and item. You will also know how to quickly scan a STAC metadata file and find the information pertinent to the questions you are seeking to answer.

Catalogs, Collections, Items, and APIs, oh my!

The STAC documentation provides a great description of the four primary components that collectively make up the STAC specification. Instead of repeating all of that great work, take a moment to read up on the four different STAC components .

Common STAC Metadata Fields

STAC Collections and Catalogs

STAC Items

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