Hi Jeff,
I agree, the 'latest' news under the 'science' section does seem to - heavily - favor space related news.
Notice though that there are sub-headings, ' environment', ' space', ' physics', ' genetics', and 'wildlife', that can be drilled down into for more targeted stories. I understand what you are looking at though, the front, most obvious, section under sciences is almost all space news.
If you would like to send feedback directly to Google News about the emphasis on space related news in the 'science, latest' section, I would suggest sending feedback to them directly. This is a user to user forum, and Google News employees don't always see all of the posts here.
To send feedback directly to the team, click on your account icon in the upper right corner of the app (or the ? icon in the web version) and follow the prompts to 'feedback'.
The Google News team takes the feedback and will consider it as they make changes in future versions of Google News,
Chris