The Universe Through the Eyes of Hubble [combi PDF]
Phillip's Astronomy Encyclopedia [text PDF]
Grygar's Wesmír jakí je [combi PDF] + [ePUB]
eAstronomia [off-line]
eObzor : Wesmír [on-line magazine]
WiKi: Historie Astronomie
WiKi: Astronomie
Astro - astronomický informační serwer
NASA
HUBBLESITE: Hubble Space Telescope
ESA: Hubble Space Telescope: !MAGE$
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Stellarium [on-line]
Stellarium - simulator of planetarium [download]
Solar System Scope [online & download]
Celestia - star exploration app [download]
Orbiter - space flights simulator [download]
DarkOrbit - Star Wars RPG on-line game
Google SKY
Eyes of NASA [download]
World Wide Telescope
Stuffing Space
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