Hackers' Pub

Syntax	Description	Examples
`"` keyword `"`	Finds the string within quotes, including spaces. Case-insensitive. (Escape quotes inside with `\"`)	`"Hackers' Pub"`
`from:` handle	Finds content written by the specified user.	`from:hongminhee` `from:hongminhee@hollo.social`
`lang:` ISO 639-1	Finds content written in the specified language.	`lang:en`
`#` tag	Finds content with the specified tag. Case-insensitive.	`#HackersPub`
condition condition	Finds content that satisfies both conditions on either side of the space (logical AND).	`"Hackers' Pub" lang:en`
condition `OR` condition	Finds content that satisfies at least one of the conditions on either side of the OR operator (logical OR).	`#HackersPub OR "Hackers' Pub" lang:en`
`(` condition `)`	Combines the operators within the parentheses first.	`(#HackersPub OR "Hackers' Pub" OR "Hackers Pub") lang:en`

Hacker News 500 @hn500@social.lansky.name

1/21/2026, 12:55:14 PM

Public

A 26,000-year astronomical monument hidden in plain sight (2019)

Link: https://longnow.org/ideas/the-26000-year-astronomical-monument-hidden-in-plain-sight/
Discussion: https://news.ycombinator.com/item?id=46695628

The 26,000-Year Astronomical Monument Hidden in Plain Sight

The western flank of the Hoover Dam holds a celestial map that marks the time of the dam’s creation based on the 25,772-year axial precession of the earth.

longnow.org · Long Now

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