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Slab Graveyard

xkcd.com

25 September 2026 at 02:00

It's ok if you want to close close your eyes for the slab graveyard, so you can still have fun riding the mantle plume back up afterward!

Voyager Instruments

xkcd.com

23 September 2026 at 02:00

Convincing him to turn off the stupid laser show and useless sound system was such a huge ordeal that no one has wanted to do it again.

Stargazing 5

xkcd.com

21 September 2026 at 02:00

The sun and the moon appear the same size in the sky, even though in real life the sun is more than twice as big. Some call this lucky alignment coincidence; others say it's proof that sometimes things can be the same size.

Tyrannosaurus

xkcd.com

18 September 2026 at 02:00

Many of the smaller dinosaurs seem to have largely preyed on housecats.

Summer

xkcd.com

16 September 2026 at 02:00

You should probably get back to shore before spring hits.

Aerospace Flowchart

xkcd.com

14 September 2026 at 02:00

Someday, we will find the problem that goes with this solution.

OH Scale

xkcd.com

11 September 2026 at 02:00

To access distant parts of the project, I ended up building a regular-scale passenger train inside each rail.

Fault Taunting

xkcd.com

9 September 2026 at 02:00

One of the first things they teach you is to NEVER play with the geology toy over a mantle hotspot.

Semaphore

xkcd.com

7 September 2026 at 02:00

The speed of light in air is 50% faster than in fiber, but it's a challenge to get the arms to move fast enough to realize the latency advantage.

Asteroid Mission

xkcd.com

4 September 2026 at 02:00

Lander, this is Houston. There's been a request that you turn clipping back on and instead set the mass to 1kg. The theorists believe that will be pretty funny.

Handedness

xkcd.com

2 September 2026 at 02:00

A 'left-handed specialist' is a physicist who studies the weak interaction.

Geology Class

xkcd.com

31 August 2026 at 02:00

The rise of AI review bombing tools threatens to take away a crucial source of experience for geology undergraduates.

Launchpad

xkcd.com

28 August 2026 at 02:00

It does come at the cost of some launchpad expansions and increased fuel requirements, but that all comes out of the facility's budget.

Trade

xkcd.com

26 August 2026 at 02:00

"You legs may have a comparative advantage at running, but we arms have a competitive advantage at swinging hammers, so unless you accept that we're the dominant limbs and stop hogging the oxygen, that running advantage won't be around for long."

Highway Signs

xkcd.com

24 August 2026 at 02:00

Highway engineers like Planck units because, like the speed of light, the energy capacity of a typical car's gas tank is 1.

xkcd store reopening

xkcd.com

21 August 2026 at 02:00

The xkcd store is back, with shirts, stickers, and posters for sale.

Archery Feat

xkcd.com

21 August 2026 at 02:00

Update: I would not have embarked on this powerscaling venture if I'd known how thoroughly Mark Twain was going to roast me.

Perseids

xkcd.com

19 August 2026 at 02:00

Recently I've been watching the Daytime Perseids. I haven't seen a meteor from them yet, but the clouds are pretty and the snacks are good.

Particle Physics Equipment

xkcd.com

17 August 2026 at 02:00

The one that sounds like the oracle at the center of the galaxy where the hero travels to hear a prophecy is probably Brookhaven National Laboratory's now-dismantled COSMOTRON.

Accretionary Arc

xkcd.com

14 August 2026 at 02:00

The late Triassic rifting was caused by a dinosaur trying to use the control panel to escape a predator, but it was eaten before the continent could fully separate.