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`

earthling @appassionato@mastodon.social

2/6/2026, 6:07:46 PM

Public

The very faint planetary nebula, known as Abell 7, is about 1,800 light-years from Earth. It is located just south of Orion toward the constellation Lepus, The Hare. Posing against the Milky Way stars, its simple spherical shape about 8 light-years in diameter is revealed in this deep telescopic image.

Image Credit & Copyright: Martin Pugh

#astrophotography
#PlanetaryNebula
#Abell7
#APOD

The beautiful and complex shapes seen within the cosmic cloud are enhanced by emission from hydrogen and oxygen atoms, otherwise it would be much too faint to be appreciated by the eye. A planetary nebula represents a very brief final phase in stellar evolution that our Sun will experience 5 billion years hence, as the nebula's central, once sun-like star loses its outer layers. Abell 7 is estimated to be 20,000 years old, but its central star, seen here as a fading white dwarf, is about 10 billion years old.

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