Following

The Matrix.org Foundation

@matrix@mastodon.matrix.org

ESO

@esoastronomy@mastodon.social

hubble

@hubble@loma.ml

Ondřej Caletka

@Oskar456@mastodon.social

Astronomy Picture of the Day

@apod@mastodon.bot

Petr Krčmář

@krcmar@mastodon.social

chiptronCZ

@chiptronCZ@mastodonczech.cz

CESNET-CERTS

@cesnet_certs@mastodonczech.cz

Turris project

@turris@fosstodon.org

National Geographic

@NatGeo@mstdn.social