Greenland Size

XKCD 25 March, 2024

The Wreck of the Edmund Fitzgerald

XKCD 22 March, 2024

Moon Landing Mission Profiles

XKCD 20 March, 2024

Moon Armor Index

XKCD 18 March, 2024

Schwa

XKCD 15 March, 2024

Earth

XKCD 13 March, 2024

Supergroup

XKCD 11 March, 2024

Physics vs. Magic

XKCD 8 March, 2024

Earth/Venus Venn Diagram

XKCD 6 March, 2024