Goddard Glossary

  • Released Thursday, April 21, 2022

Umbra and Penumbra

Music: "Snarky" by Wally Gaggel [ASCAP] and Xandy Barry [ASCAP]

Complete transcript available.

Science loves jargon. When we write about Goddard’s research, we learn new words and phrases all the time, and we want to share them with you.

Welcome to the Goddard Glossary!



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NASA's Goddard Space Flight Center


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Release date

This page was originally published on Thursday, April 21, 2022.
This page was last updated on Friday, October 2, 2026 at 11:11 AM EDT.