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Title text:
The 'light' refers to bremsstrahlung.
Transcript:
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Source: https://xkcd.com/3315/
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2
Title text:
Other numbers are largely unaffected, but anyone using '4' for their certificate key is urged to upgrade to '5'.
Transcript:
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Source: https://xkcd.com/3314/
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Title text:
I don't see why people have trouble doing this at room temperature. Using hot rivets would honestly have been MORE work.
Transcript:
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Source: https://xkcd.com/3313/
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xkcd #3312: Momentum Demonstration
Title text:
"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."
Transcript:
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Source: https://xkcd.com/3312/
6
Title text:
Atmospheric transmission spectroscopy has revealed that the sunsets from the observatory are really pretty.
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Source: https://xkcd.com/3311/
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xkcd #3310: Rejected Space Mission Profiles
Title text:
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.
Transcript:
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Source: https://xkcd.com/3310/
9
Title text:
People out here catching strays out here catching strays
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Source: https://xkcd.com/3309/
10
Title text:
I need to push some updates to the remote sensing instruments, which are there to measure the surface and definitely not do anything else.
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Source: https://xkcd.com/3308/
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xkcd #3307: Spectrum Allocation
Title text:
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.
Transcript:
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Source: https://xkcd.com/3307/
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xkcd #3306: Accelerator Energies
Title text:
Fans at Daytona always get extra excited when officials decide to introduce some antimatter cars circling the track in the opposite direction.
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Source: https://xkcd.com/3306/
14
Title text:
Runners looking for aerodynamic advantage typically wear sneakers because some fancy dress shoes can create wingtip vortices.
Transcript:
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Source: https://xkcd.com/3305/
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xkcd #3304: Jupiter Icy Moons Explorer
Title text:
"I did briefly visit Venus in August 2025, but I figured out the mistake on my own because it didn't have any moons."
Transcript:
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Source: https://xkcd.com/3304/
16
Title text:
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!
Transcript:
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Source: https://xkcd.com/3303/
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xkcd #3302: Voyager Instruments
Title text:
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.
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Source: https://xkcd.com/3302/
18
Title text:
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.
Transcript:
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Source: https://xkcd.com/3301/
19
Title text:
Many of the smaller dinosaurs seem to have largely preyed on housecats.
Transcript:
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Source: https://xkcd.com/3300/
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Title text:
You should probably get back to shore before spring hits.
Transcript:
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Source: https://xkcd.com/3299/
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xkcd #3298: Aerospace Flowchart
Title text:
Someday, we will find the problem that goes with this solution.
Transcript:
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Source: https://xkcd.com/3298/
23
Title text:
To access distant parts of the project, I ended up building a regular-scale passenger train inside each rail.
Transcript:
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Source: https://xkcd.com/3297/
24
Title text:
One of the first things they teach you is to NEVER play with the geology toy over a mantle hotspot.
Transcript:
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Source: https://xkcd.com/3296/
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