Quellen astronomischer Bilder
HUBBLE TELESCOPE
http://hubblesite.orghttp://www.spacetelescope.org
Hubble Heritage Image Gallery
http://heritage.stsci.edu/gallery/gallery.html
Hubble Heritage Project
http://heritage.stsci.edu/
Hubble Heritage by flickr.com
http://www.flickr.com/photos/hubble-heritage/
ESO - European Southern Observatory
http://www.eso.org
ESO-Nutzungsbedingungen
Lizenzbestimmungen
APOD (ASTRONOMIC PICTURE OF THE DAY)
http://www.starobserver.org
http://apod.nasa.gov/apod
APOD-Lizenzbestimmungen
Bilder von privaten Personen
TONY AND DAPHNE HALLAS
http://astrophoto.com
Orionnebula-M42
http://www.starobserver.org/ap081023.html
http://www.star.ucl.ac.uk/~apod/apod/ap081023.html
Jesús Vargas
Orionnebula-M42
http://www.starobserver.org/ap081023.html
http://www.star.ucl.ac.uk/~apod/apod/ap081023.html
Jesús Vargas
http://www.sky-astrophotography.com
http://apod.nasa.gov/apod/ap110913.html
http://www.bigcigarastronomy.com/
http://www.astrooptik.com/
http://www.aznightsky.com/Astrophotography2.htm
http://www.astronomik.com/gallery
http://universe-beauty.com
http://bf-astro.com
http://www.flickr.com/photos/terryhancock/5199730364/
http://apod.nasa.gov/apod/ap110913.html
Weitere
http://amazing-space.stsci.edu/galleryhttp://www.bigcigarastronomy.com/
http://www.astrooptik.com/
http://www.aznightsky.com/Astrophotography2.htm
http://www.astronomik.com/gallery
http://universe-beauty.com
http://bf-astro.com
http://www.flickr.com/photos/terryhancock/5199730364/