Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock ( ) or https://
means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
The AST_05 Version 3 data product was decommissioned on December 15, 2025. Users are encouraged to use the [AST_05 Version 4 data product](https://doi.org/10.5067/ASTER/AST_05.004). The Terra...
data.gov
An official website of the GSA's Technology Transformation Services