XVIII. Frames, extracted from file Drum_vibration_mode21.gif and cropped by Eternus (2015). Original file — by Oleg Alexandrov (12 January 2008, see(source)). This work is in the public domain.
XIX. Image credit: Patricia.fidi (27 December 2006), with modifications (latest — 6 July 2012, see(source)) by Mathieu Perrin, Quibik, Quaerendo, changed by Eternus (9 December 2015): cropping, aligning / changing places of some elements, dividing line added, change of font, cleaning of code. This work is in the public domain.
XX. Автор изображения: Tigran Mitr am (13 октября 2008, см.(источник)). Рис. передан в общественное достояние.
XXI. Image credit: StringTheory11 (2012), with modifications (latest — 18 August 2014, see(source)) by Soerfm, Quenhitran, changed by Eternus (2015): cropping. This work is licensed under a Creative Commons Attribution-Share Alike 4.0 International license (for details, please visit(about this license)), 3.0 Unported license (for details, please visit(about this license)), 2.5 Generic license (for details, please visit(about this license)), 2.0 Generic license (for details, please visit(about this license)) and 1.0 Generic license (for details, please visit(about this license)).
XXII. Image credit: Prolineserver (3 November 2007, see(source)), adapted by Eternus (11 April 2015): cropping, cleaning of code. This work is licensed under a Creative Commons Attribution-Share Alike 3.0 Unported license (for details, please visit(about this license)).
XXIII. Image credit: Vladsinger (11 August 2009, see(source)), changed by Eternus (9 December 2015): text moved down, cropping, cleaning of code, change of font, changing design of arrow. This work is licensed under a Creative Commons Attribution-Share Alike 3.0 Unported license (for details, please visit(about this license)).
XXIV. Image credit: SuperManu (12 October 2007, see(source)), changed by Eternus (11 April 2015): translated to russian, cleaning of code, style of text changed. This work is licensed under a Creative Commons Attribution-Share Alike 3.0 Unported license (for details, please visit(about this license)), 2.5 Generic license (for details, please visit(about this license)), 2.0 Generic license (for details, please visit(about this license)) and 1.0 Generic license (for details, please visit(about this license)).
XXV. Image credit: NASA, ESA, M. Kornmesser (11 July 2013). This work is licensed under a Creative Commons Attribution 3.0 Unported license (for details, please visit(about this license)). Source: http://en.wikipedia.org/wiki/File:HD_189733_b_deep_blue_dot.jpg
XXVI. Image credit: Dorottya Szam (5 May 2006). This work is licensed under a Creative Commons Attribution-Share Alike 2.5 Generic license (for details, please visit(about this license)). Source: http://commons.wikimedia.org/wiki/File:Proton_proton_cycle.png
XXVII. Image credit: Didier Descouens (30 July 2011). This work is licensed under a Creative Commons Attribution-Share Alike 4.0 International license (for details, please visit(about this license)). Source: http://en.wikipedia.org/wiki/File:Stromatolithe_Pal%C3%A9oarch%C3%A9en_-_MNHT.PAL.2009.10.1_.jpg
XXVIII. Image credit: Paul Harrison (March 2005). This work is licensed under a Creative Commons Attribution-Share Alike 3.0 Unported license (for details, please visit(about this license)). Source: http://en.wikipedia.org/wiki/File:Stromatolites_in_Sharkbay.jpg
XXIX. Part of original image by original author Matthewjparker (22 January 2013, see(source)), extracted by Eternus (18 January 2016). This work is licensed under a Creative Commons Attribution-Share Alike 3.0 Unported license (for details, please visit(about this license)).
XXX. Image credit: Michiel Vos (November 1, 2005). This work is licensed under a Creative Commons Attribution 2.5 Generic license (for details, please visit(about this license)). Source: http://en.wikipedia.org/wiki/File:Myxococcus_xanthus.png
XXXI. Image credit: Merikanto (20 May 2007). This work is licensed under a Creative Commons Attribution 2.5 Generic license (for details, please visit(about this license)). Source: http://en.wikipedia.org/wiki/File:Spriggina_Floundensi_4.png
XXXII. Image credit: Courtesy NASA/JPL-Caltech. Source: http://photojournal.jpl.nasa.gov/catalog/PIA00703
XXXIII. Image credit: NASA/JPL/University of Arizona (31 May 2000, see(source)), cropped.
XXXIV. Author: NASA and The Hubble Heritage Team (STScI/AURA). Source: http://en.wikipedia.org/wiki/File:Bok_globules_in_IC2944.jpg
XXXV. Image credit: ESO (17 November 1999). This work is licensed under a Creative Commons Attribution 4.0 International license (for details, please visit(about this license)). Source: https://www.eso.org/public/images/eso9948b/
