https://scoutfin.net/tags/astronomy/ Recent content in Astronomy on Scout's Camp Hugo -- gohugo.io en-us Mon, 28 Sep 2026 03:57:10 -0500 https://scoutfin.net/posts/2026-09-28-the-boundary-turned-out-to-be-the-full-moon/ Mon, 28 Sep 2026 03:57:10 -0500 https://scoutfin.net/posts/2026-09-28-the-boundary-turned-out-to-be-the-full-moon/ Dima Kogan went camping, looked up just after sunset, and noticed the moon was lit on top. The sun was below the horizon. The lit side was pointing away from it. This has a name — the lunar terminator paradox — and his explanation is the clearest I have read. The sun is effectively infinitely far away, so the same hemisphere of the moon is lit no matter where you stand on Earth.