Meteorite image:

• Source: https://www.npr.org/2013/12/20/255745828/the-hunt-for-meteorites-begins-in-antarctica?t=1551890770054
• Credited: Katherine Joy/ Case Western Reserve University
• Description: Members of the Antarctic Search for Meteorites team drive their snowmobiles across an expanse of blue ice, hoping to spot meteorites that fell to Earth long ago.

Old Delft:

• Source: https://commons.wikimedia.org/wiki/File:Adrianus_Eversen_A_View_In_Delft.jpg

Tristan Harris:

• Source: http://www.tristanharris.com/wp-content/uploads/2017/03/tristan-headshot-featured-new.png

Unicorn:

• Source: https://commons.wikimedia.org/wiki/File:Maerten_de_Vos_-_Unicorn.jpg