Curate the new topic nasa-pace

[itcarroll]

Please confirm this pull request meets the following requirements:

• I followed the contributing guidelines: https://github.com/github/explore/blob/main/CONTRIBUTING.md.
• This change is not self-promotion.

Which change are you proposing?

• Suggesting edits to an existing topic or collection
• Curating a new topic or collection
• Something that does not neatly fit into the binary options above

---

Curating a new topic or collection

• I've formatted my changes as a new folder directory, named for the topic or collection as it appears in the URL on GitHub (e.g. https://github.com/topics/[NAME] or https://github.com/collections/[NAME])
• My folder contains a *.png image (if applicable) and index.md
• All required fields in my index.md conform to the Style Guide and API docs: https://github.com/github/explore/tree/main/docs

Researchers from NASA and from outside NASA are doing science on GitHub related to this mission, and this topic is the best way to bundle them together!

---

Please note: we will close your PR without comment if you do not check the boxes above and provide ALL requested information.

[kenyonj]

👍🏼 for the greater good 🎉

Thanks for your contribution!

[itcarroll]

Curated content for new topics, including this one, aren't showing up on github.com/topics/. @kenyonj, is it expected to take more than six months?