Scientists believe that Earth actually has 39 moons, but 38 of them are invisible.
https://media.mstdn.social/media_attachments/files/113/484/146/006/704/075/original/d34e63c0cee056f2.png
I thought I saw one once but it was just a smudge on my telescope.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.