Related external links, including the ones referred in the book

Wikipedia:
List of map projections

world map

Wolfie6020:
Double sunset - sending a drone up at sunset

sunset

Wolfie6020:
Tracking the size of the Sun for 5 hours

sun sizes

Wolfie6020:
Oh no! It's sinking!!
Ships going over the horizon

ship

HeavensAbove:
Predictions of satellite flybys for any location

satellite orbits

MiGflug:
Want to see the curvature of the Earth?
Get a ride on a MiG-29 in Russia

curved horizon

metabunk.org:
Amateur photos and videos of the ISS

iss

NASA:
Solar System Simulator (often offline)

solar system

AmazingSky:
How stars rotate in the northern hemisphere

star trails

AmazingSky:
How stars rotate in the southern hemisphere

star trails south

Admiral Byrd's interview:
One of the "cornerstones" of the conspiracy

byrd

BBC News:
The fireball over Chelyabinsk

fireball

JAXA:
Real time pictures from the Himawari 8 satellite

earth image

TimeAndDate.com:
All sorts of useful predictions

equinox daylight

NASA:
Video: the rotation of the Sun

sunspots

Wikipedia:
Lunar libration

Moon crescent

NASA:
Solar Eclipse page

solar eclipse

NASA:
Lunar Eclipse page

lunar eclipse

"Flat Out Wrong: The Overwhelming Evidence Against Flat Earth" is available from Amazon US, CA, UK, BR, DE, ES, FR, NL, IT, AU, IN, JP.