Quellen

http://members.aon.at/fraba/weltall.jpg

http://www.eta7.de/images/aus-dem-weltall-2.jpg

https://www.kika.de/der-kleine-prinz/extras/infofacts/astronomie100.html

http://www.anawalls.com/%E6%83%91%E6%98%9F%E7%94%BB%E5%83%8F-%E5%AE%87%E5%AE%99%E3%81%AE%E5%A3%81%E7%B4%99%E3%81%AF-%E8%83%8C%E6%99%AF%E3%82%92%E4%B8%BB%E6%BC%94/

https://apod.nasa.gov/apod/image/1804/Ring_HubbleDonatiello_3251.jpg

https://apod.nasa.gov/apod/image/1804/MilkyVlei_Liebermann_4000.jpg

https://www.duden.de/rechtschreibung/Weltall

http://www.fwu-mediathek.de/blog/wp-content/uploads/2013/10/5511022.jpg