Bildrechte

Wikipedia; User:Kolossos; http://creativecommons.org/licenses/by/3.0/legalcode
wikipedia, user Learnandlearn, http://creativecommons.org/publicdomain/zero/1.0/deed.en
wikipedia, user: Tuxyso, http://creativecommons.org/licenses/by-sa/3.0/
iStock.
Marquardt&Bahls
wikipedia, User:Pwagenblast, http://creativecommons.org/licenses/by-sa/4.0/
wikipedia, user: Christian A. Schröder, http://creativecommons.org/licenses/by-sa/4.0
Flughafen Stuttgart GmbH
European XFEL