| 26.1 | Open Artstor Collection | William Herschel | odkaz | 25. 10. 2022 |
| 26.2 | CC BY-NC-SA 4.0 | Jitka Hloušková | odkaz | 25. 10. 2022 |
| 26.3 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 25. 10. 2022 |
| 26.4a | CC BY-SA 3.0 | Lcamtuf | - | 25. 10. 2022 |
| 26.4b | Observatoire de la Côte d'Azur sciences de l'univers | Observatoire de la Côte d'Azur sciences de l'univers | - | 25. 10. 2022 |
| 26.4c | Observatoire de la Côte d'Azur sciences de l'univers | Observatoire de la Côte d'Azur sciences de l'univers | - | 25. 10. 2022 |
| 26.4d | Observatoire de la Côte d'Azur sciences de l'univers | Observatoire de la Côte d'Azur sciences de l'univers | - | 25. 10. 2022 |
| 26.5 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 25. 10. 2022 |
| 26.6 | CC BY-NC-SA 4.0 | Mirek Kubera | - | 25. 10. 2022 |
| 26.7a | CC BY-NC-SA 4.0 | Ivan Emr | - | 25. 10. 2022 |
| 26.7b | CC BY-NC-SA 4.0 | Ivan Emr | - | 25. 10. 2022 |
| 26.7c | CC BY-NC-SA 4.0 | Ivan Emr | - | 25. 10. 2022 |
| 26.8 | Standardní licence Adobe Stock Images | Adobe Inc. | - | 25. 10. 2022 |
| 26.9 | Volné dílo | Neznámý autor | odkaz | 25. 10. 2022 |
| 26.10a | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 25. 10. 2022 |
| 26.10b | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 25. 10. 2022 |
| 26.10c | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 25. 10. 2022 |
| 26.10d | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 25. 10. 2022 |
| 26.10e | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 25. 10. 2022 |
| 26.10f | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 26. 10. 2022 |
| 26.11 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 26. 10. 2022 |
| 26.12 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 26. 10. 2022 |
| 26.13 | Adobe Stock Images | Adobe Inc. | - | 26. 10. 2022 |
| 26.14 | Adobe Stock Images | Adobe Inc. | - | 26. 10. 2022 |
| 26.15 | CC BY-NC-SA 4.0 | Mirek Kubera | - | 26. 10. 2022 |
| 26.16 | StargazersLounge.com | StargazersLounge.com | odkaz | 26. 10. 2022 |
| 26.17 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 26. 10. 2022 |
| 26.18 | CC BY-NC-SA 4.0 | Mirek Kubera | - | 26. 10. 2022 |
| 26.19 | CC BY-NC-SA 4.0 | Mirek Kubera | - | 26. 10. 2022 |
| 26.20 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 26. 10. 2022 |
| 26.21 | CC BY 4.0 | ESA/Hubble & NASA, R. Cohen | odkaz | 26. 10. 2022 |
| 26.22 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 26. 10. 2022 |
| 26.23 | CC BY-NC-SA 4.0 | David Nečas | - | 26. 10. 2022 |
| 26.24 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 26. 10. 2022 |
| 26.25 | ESA and the Planck Collaboration | ESA and the Planck Collaboration | odkaz | 26. 10. 2022 |
| 26.26 | CC Attribution 4.0 International | Gary Bower, Richard Green (NOAO), the STIS Instrument Definition Team, and NASA/ESA | odkaz | 26. 10. 2022 |
| 26.27 | CC Attribution 4.0 International | N.A. Sharp/KPNO/NOIRLab/NSO/NSF/AURA | odkaz | 26. 10. 2022 |
| 26.28 | Public Domain | NASA, ESA, CSA, STScI | odkaz | 26. 10. 2022 |
| 26.29 | Public Domain | NASA, ESA, CSA, STScI | odkaz | 26. 10. 2022 |
| 26.30 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 26. 10. 2022 |
| 26.31 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 26. 10. 2022 |
| 26.32a | Adobe Stock Images | Adobe Inc. | - | 26. 10. 2022 |
| 26.32b | Adobe Stock Images | Adobe Inc. | - | 26. 10. 2022 |
| 26.32c | Adobe Stock Images | Adobe Inc. | - | 26. 10. 2022 |
| 26.32d | CC BY-SA 3.0 | Jeff Dahl | odkaz | 26. 10. 2022 |
| 26.33 | NNH | NNH | odkaz | 26. 10. 2022 |
| 26.34 | Adobe Stock Images | Adobe Inc. | - | 26. 10. 2022 |
| 26.35 | Adobe Stock Images | Adobe Inc. | - | 26. 10. 2022 |
| 26.36a | Adobe Stock Images | Adobe Inc. | - | 26. 10. 2022 |
| 26.36b | Adobe Stock Images | Adobe Inc. | - | 26. 10. 2022 |
| 26.36c | CC BY-NC-SA 4.0 | Mirek Kubera | - | 26. 10. 2022 |
| 26.36d | CC BY-NC-SA 4.0 | Mirek Kubera | - | 26. 10. 2022 |
| 26.37a | Adobe Stock Images | Adobe Inc. | - | 26. 10. 2022 |
| 26.37b | Adobe Stock Images | Adobe Inc. | - | 26. 10. 2022 |
| 26.37c | Adobe Stock Images | Adobe Inc. | - | 26. 10. 2022 |
| 26.38a,b | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 26. 10. 2022 |
| 26.39 | atclighting.co | atclighting.co | odkaz | 26. 10. 2022 |
| 26.40a | CC BY-NC-SA 4.0 | Ivan Emr | - | 30. 10. 2022 |
| 26.40b | CC BY-NC-SA 4.0 | Ivan Emr | - | 30. 10. 2022 |
| 26.40c | CC BY-NC-SA 4.0 | Ivan Emr | - | 30. 10. 2022 |
| 26.40d | CC BY-NC-SA 4.0 | Ivan Emr | - | 30. 10. 2022 |
| 26.40e | CC BY-NC-SA 4.0 | Ivan Emr | - | 30. 10. 2022 |
| 26.41 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 30. 10. 2022 |
| 26.42 | CC BY-NC-SA 4.0 | Jitka Hloušková | odkaz | 30. 10. 2022 |
| 26.43 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 30. 10. 2022 |
| 26.44 | Media Guidelines NASA | NASA/JPL-Caltech | odkaz | 30. 10. 2022 |
| 26.45 | Adobe Stock Images | Adobe Inc. | - | 30. 10. 2022 |
| 26.46 | Adobe Stock Images | Adobe Inc. | - | 30. 10. 2022 |
| 26.47 | CC BY-NC-SA 4.0 | David Nečas | - | 30. 10. 2022 |
| 26.48 | Phillips | Phillips | - | 30. 10. 2022 |
| 26.49 | Rendl Light Studio | Rendl Light Studio | - | 30. 10. 2022 |
| 26.50 | CC BY-NC-SA 4.0 | Jitka Hloušková | - | 30. 10. 2022 |
| 26.51 | Neznámá | Neznámý autor | - | 30. 10. 2022 |
| 26.52 | CC BY-NC-SA 4.0 | Mirek Kubera | - | 30. 10. 2022 |
| 26.53 | CC BY-NC-SA 4.0 | Mirek Kubera | - | 30. 10. 2022 |
