Who created the images that appear on the Scala homepage?

The images are as follows:

• "Introduction": This very professional image is called "Gaia Shine", and was created by Flávio Takemoto.
• "Learn Scala": The image is called "Book...", and the author is Zsuzsanna Kilián.
• "In the Enterprise: This fantastic image is "Golden Egg", authored by Mateusz Stachowski.
• "Research": The painting is "Come Unto These Yellow Sands", painted by Richard Dadd in 1842.
• "Community": it is a picture of Prague, part of the free Drupal theme called "Marinelli"
• "The Compiler": the picture is "Roger", and is also part of the free Drupal theme called "Marinelli"