Heimildir
Hurd, D. (2002). Sól, tungl og stjörnur. Reykjavík: Námsgagnastofnun.
Myndir
http://www.stjornufraedi.is/solkerfid/merkurius
http://www.zmescience.com/space/nasa-venus-airship-crew-0423432/
http://www.thetimes.co.uk/tto/science/space/article3115585.ece
http://www.stjornufraedi.is/solkerfid/smastirni
http://phandroid.com/2015/02/28/android-wallpaper-galaxies/
http://www.geimurinn.is/myndasafn/album/18/mynd/3265
http://keppni.ismennt.is/vefir/geimurinn/loftsteinar.html
https://www.google.is/search?q=alien&espv=2&biw=1280&bih=637&source=lnms&tbm=isch&sa=X&ei=mtc7VZGuH5HKaNuygcAB&ved=0CAYQ_AUoAQ#tbm=isch&q=toy+story+aliens&imgrc=ioxCco31iOfM7M%253A%3Bs06IbYvxEJWhRM%3Bhttp%253A%252F%252Fvignette3.wikia.nocookie.net%252Fpixar%252Fimages%252F2%252F22%252FGreenaliens.jpg%252Frevision%252Flatest%253Fcb%253D20111208014822%3Bhttp%253A%252F%252Fpixar.wikia.com%252FAliens%3B1600%3B1200
https://www.google.is/search?q=geimgr%C3%BDti&espv=2&biw=1280&bih=637&source=lnms&tbm=isch&sa=X&ei=VMw7VYuXHIfYav3agOAP&ved=0CAYQ_AUoAQ#imgrc=eQtxrJr3005AHM%253A%3BdfRM8u_YCqbdeM%3Bhttp%253A%252F%252Fkeppni.ismennt.is%252Fvefir%252Fgeimurinn%252FMyndir%252Flofseinar.jpg%3Bhttp%253A%252F%252Fkeppni.ismennt.is%252Fvefir%252Fgeimurinn%252Floftsteinar.html%3B780%3B526
https://www.google.is/search?q=et&es_sm=91&source=lnms&tbm=isch&sa=X&ei=1sw7VeOYD4LoaryfgYgD&ved=0CAcQ_AUoAQ&biw=1280&bih=637#imgrc=JxEDh-L5nTRaWM%253A%3Bvx3Co1FdiaOkQM%3Bhttp%253A%252F%252Fi.telegraph.co.uk%252Fmultimedia%252Farchive%252F01474%252Fet_1474485b.jpg%3Bhttp%253A%252F%252Fwww.telegraph.co.uk%252Fnews%252Fscience%252Fspace%252F10700476%252FBritain-joins-new-hunt-for-E.T..html%3B620%3B400
https://www.google.is/search?q=sm%C3%A1stirnabelti%C3%B0&espv=2&biw=1280&bih=637&source=lnms&tbm=isch&sa=X&ei=9847VYa2BMPWapDFgbgN&ved=0CAYQ_AUoAQ&dpr=1#imgrc=W-63DKZCx0-M7M%253A%3B8_-x-xdDOjpufM%3Bhttp%253A%252F%252Fstjornuskodun.blog.is%252Fusers%252Fce%252Fstjornuskodun%252Fimg%252Frosetta_lutetia_globe_lg_1090093.png%3Bhttp%253A%252F%252Fstjornuskodun.blog.is%252Fblog%252Fstjornuskodun%252F%253Foffset%253D220%3B1134%3B1200
Hurd, D. (2002). Sól, tungl og stjörnur. Reykjavík: Námsgagnastofnun.
Myndir
http://www.stjornufraedi.is/solkerfid/merkurius
http://www.zmescience.com/space/nasa-venus-airship-crew-0423432/
http://www.thetimes.co.uk/tto/science/space/article3115585.ece
http://www.stjornufraedi.is/solkerfid/smastirni
http://phandroid.com/2015/02/28/android-wallpaper-galaxies/
http://www.geimurinn.is/myndasafn/album/18/mynd/3265
http://keppni.ismennt.is/vefir/geimurinn/loftsteinar.html
https://www.google.is/search?q=alien&espv=2&biw=1280&bih=637&source=lnms&tbm=isch&sa=X&ei=mtc7VZGuH5HKaNuygcAB&ved=0CAYQ_AUoAQ#tbm=isch&q=toy+story+aliens&imgrc=ioxCco31iOfM7M%253A%3Bs06IbYvxEJWhRM%3Bhttp%253A%252F%252Fvignette3.wikia.nocookie.net%252Fpixar%252Fimages%252F2%252F22%252FGreenaliens.jpg%252Frevision%252Flatest%253Fcb%253D20111208014822%3Bhttp%253A%252F%252Fpixar.wikia.com%252FAliens%3B1600%3B1200
https://www.google.is/search?q=geimgr%C3%BDti&espv=2&biw=1280&bih=637&source=lnms&tbm=isch&sa=X&ei=VMw7VYuXHIfYav3agOAP&ved=0CAYQ_AUoAQ#imgrc=eQtxrJr3005AHM%253A%3BdfRM8u_YCqbdeM%3Bhttp%253A%252F%252Fkeppni.ismennt.is%252Fvefir%252Fgeimurinn%252FMyndir%252Flofseinar.jpg%3Bhttp%253A%252F%252Fkeppni.ismennt.is%252Fvefir%252Fgeimurinn%252Floftsteinar.html%3B780%3B526
https://www.google.is/search?q=et&es_sm=91&source=lnms&tbm=isch&sa=X&ei=1sw7VeOYD4LoaryfgYgD&ved=0CAcQ_AUoAQ&biw=1280&bih=637#imgrc=JxEDh-L5nTRaWM%253A%3Bvx3Co1FdiaOkQM%3Bhttp%253A%252F%252Fi.telegraph.co.uk%252Fmultimedia%252Farchive%252F01474%252Fet_1474485b.jpg%3Bhttp%253A%252F%252Fwww.telegraph.co.uk%252Fnews%252Fscience%252Fspace%252F10700476%252FBritain-joins-new-hunt-for-E.T..html%3B620%3B400
https://www.google.is/search?q=sm%C3%A1stirnabelti%C3%B0&espv=2&biw=1280&bih=637&source=lnms&tbm=isch&sa=X&ei=9847VYa2BMPWapDFgbgN&ved=0CAYQ_AUoAQ&dpr=1#imgrc=W-63DKZCx0-M7M%253A%3B8_-x-xdDOjpufM%3Bhttp%253A%252F%252Fstjornuskodun.blog.is%252Fusers%252Fce%252Fstjornuskodun%252Fimg%252Frosetta_lutetia_globe_lg_1090093.png%3Bhttp%253A%252F%252Fstjornuskodun.blog.is%252Fblog%252Fstjornuskodun%252F%253Foffset%253D220%3B1134%3B1200