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Normal view

Received — 2 November 2026 ⏭ xkcd.com

xkcd.com
Elevators 1 November 2026 at 19:00

Elevators

xkcd.com

1 November 2026 at 19:00

"A reusable elevator would also be great because we'd save so much on the bulky and expensive shields that people currently use to avoid bruises and rug burns when sliding down the stairs."

Received — 30 October 2026 ⏭ xkcd.com

xkcd.com
Earth Sized Planets 29 October 2026 at 19:00

Earth Sized Planets

xkcd.com

29 October 2026 at 19:00

It probably has an icy mantle over the real silicate geology, but I'm hoping something weird happened to burn off most of the water like with Io.

Received — 28 October 2026 ⏭ xkcd.com

xkcd.com
Gravitational Square Wave 27 October 2026 at 19:00

Gravitational Square Wave

xkcd.com

27 October 2026 at 19:00

Depending on the energy deposition I can manage, it might also be a fun prank on the rest of the Earth.

Received — 27 October 2026 ⏭ xkcd.com

xkcd.com
Siege Engine 25 October 2026 at 19:00

Siege Engine

xkcd.com

25 October 2026 at 19:00

They initially thought the containment structure alone would be sufficient, but for good measure they decided to include the Elephant's Foot inside.

Received — 23 October 2026 ⏭ xkcd.com

xkcd.com
Forms of Water 22 October 2026 at 19:00

Forms of Water

xkcd.com

22 October 2026 at 19:00

The 'light' refers to bremsstrahlung.

Received — 21 October 2026 ⏭ xkcd.com

xkcd.com
Vulnerability 20 October 2026 at 19:00

Vulnerability

xkcd.com

20 October 2026 at 19:00

Other numbers are largely unaffected, but anyone using '4' for their certificate key is urged to upgrade to '5'.

Received — 19 October 2026 ⏭ xkcd.com

xkcd.com
Fusion Device 18 October 2026 at 19:00

Fusion Device

xkcd.com

18 October 2026 at 19:00

I don't see why people have trouble doing this at room temperature. Using hot rivets would honestly have been MORE work.

Received — 16 October 2026 ⏭ xkcd.com

xkcd.com
Momentum Demonstration 15 October 2026 at 19:00

Momentum Demonstration

xkcd.com

15 October 2026 at 19:00

"I'm doing really well on the Hertzsprung-Russell academic diagram, which has spectral class on one axis and Rate My Professors rating on the other."

Received — 14 October 2026 ⏭ xkcd.com

xkcd.com
Planet Database 13 October 2026 at 19:00

Planet Database

xkcd.com

13 October 2026 at 19:00

Atmospheric transmission spectroscopy has revealed that the sunsets from the observatory are really pretty.

Received — 12 October 2026 ⏭ xkcd.com

xkcd.com
Rejected Space Mission Profiles 11 October 2026 at 19:00

Rejected Space Mission Profiles

xkcd.com

11 October 2026 at 19:00

Although NASA agreed that Voyager 2 'seemed lonely' they decided against launching a companion orbiter mission after further measurements indicated that the spacecraft actually preferred the peace and quiet.

Received — 9 October 2026 ⏭ xkcd.com

xkcd.com
Dogcatcher 8 October 2026 at 19:00

Dogcatcher

xkcd.com

8 October 2026 at 19:00

People out here catching strays out here catching strays

Received — 7 October 2026 ⏭ xkcd.com

xkcd.com
Juice 6 October 2026 at 19:00

Juice

xkcd.com

6 October 2026 at 19:00

I need to push some updates to the remote sensing instruments, which are there to measure the surface and definitely not do anything else.

Received — 5 October 2026 ⏭ xkcd.com

xkcd.com
Spectrum Allocation 4 October 2026 at 19:00

Spectrum Allocation

xkcd.com

4 October 2026 at 19:00

Rumor has it that they're finally auctioning off the zeppelin navigation bands, but everyone is worried that the scary boat captains will express interest.

Received — 2 October 2026 ⏭ xkcd.com

xkcd.com
Accelerator Energies 1 October 2026 at 19:00

Accelerator Energies

xkcd.com

1 October 2026 at 19:00

Fans at Daytona always get extra excited when officials decide to introduce some antimatter cars circling the track in the opposite direction.

Received — 1 October 2026 ⏭ xkcd.com

xkcd.com
Ground Effect 29 September 2026 at 19:00

Ground Effect

xkcd.com

29 September 2026 at 19:00

Runners looking for aerodynamic advantage typically wear sneakers because some fancy dress shoes can create wingtip vortices.

Received — 28 September 2026 ⏭ xkcd.com

xkcd.com
Jupiter Icy Moons Explorer 27 September 2026 at 19:00

Jupiter Icy Moons Explorer

xkcd.com

27 September 2026 at 19:00

"I did briefly visit Venus in August 2025, but I figured out the mistake on my own because it didn't have any moons."

Received — 25 September 2026 ⏭ xkcd.com

xkcd.com
Slab Graveyard 24 September 2026 at 19:00

Slab Graveyard

xkcd.com

24 September 2026 at 19:00

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!

Received — 23 September 2026 ⏭ xkcd.com

xkcd.com
Voyager Instruments 22 September 2026 at 19:00

Voyager Instruments

xkcd.com

22 September 2026 at 19:00

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.

Received — 21 September 2026 ⏭ xkcd.com

xkcd.com
Stargazing 5 20 September 2026 at 19:00

Stargazing 5

xkcd.com

20 September 2026 at 19:00

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.

Received — 18 September 2026 ⏭ xkcd.com

xkcd.com
Tyrannosaurus 17 September 2026 at 19:00

Tyrannosaurus

xkcd.com

17 September 2026 at 19:00

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