The short version
Local-first planetarium that makes Earth's rotation feel immediate.
From the HackerLinks archive
Zenith
Local-first planetarium that makes Earth's rotation feel immediate.
At a glance:
First seen:2026-05-15
Last seen:2026-05-15
Times seen:1
Website:smorgasb.org
Why it caught our attention
Users reacted strongly to how visceral the fixed-viewport experience felt.
Where it surfaced on Hacker News
2026-05-15
Editorial paraphrase
Comments described the effect as amazing and said it made Earth’s motion feel immediate and visceral.
Original threadZenith: a live local-first fixed viewport planetarium