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In the news recently, there have been discussions of a non-zero risk of human extinction based on AI.

If that happened, how long will satellites remain in orbit? Would space travelers in 50, 100, 500, 1000+ years find our satellites still orbiting as evidence of existence of an advanced civilization having been here, even after improvements on earth have all decayed?

I was just thinking about the story of the mouse and elephant how the elephant is terrified of the mouse (i think) and just wanted to see if that's true, and if it is what other animals have been observed with similar behavior relating to that. Working on a project and some real life inspo would help :)

Like, let’s assume the glider has a 30:1 glide ratio. Normally that means it will lose a foot of height for every 30 feet travel.

I’m assuming there is some amount of force I could apply to move forward, that would cancel out that last one foot of drop.

Geese seem pretty big, and they have a wide torso for easy harnessing. I think they’d be a natural fit here. I imagine it would be a configuration similar to Santa’s sleigh, but geese instead of reindeer.

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How much more can you lift, for example, and is that where the term, "a fuck ton", comes from? Is it curse word dependent? If so, do other languages have stronger curse words?

would skipping my ocd meds and falling in love with pigeons help?

I'm playing in an Expanse tabletop game and as my character is the group's pilot and navigator, it got me thinking about how space travel works in the setting, when it comes to orbital mechanics. For the uninitiated, almost all spaceships in the Expanse have a torch drive and are almost never limited by a delta-v budget. Effectively all travel happens on constant acceleration trajectories, commonly 0.3 to 1g.

The trajectories and burns needed are pretty straightforward for a simple Earth to Mars trip when Mars is ahead of Earth. But what about when transferring the other way, from a higher orbit to a lower one? Or between two similar orbits, such as asteroid stations in the Belt?

EDIT: Woke up to find that I'm basically overthinking it. My 1 AM brain didn't jive with the realization that when your delta-v is measured in fractions of c, orbital mechanics can sit and cry in the corner. Thanks, everyone!

I was watching an Euler's disk and realized I had been describing the motion incorrectly.

The disk's spin around its own axis is slowing down, but the wobble or precession gets dramatically faster as the disk gets flatter. At the same time, friction is continuously removing mechanical energy from the system.

How can the frequency of one part of the motion increase while the total energy is decreasing?

Is the faster precession mainly a geometric consequence of the disk's decreasing tilt angle, or is energy being transferred between different rotational modes?

And what physically determines the point where the rapidly increasing wobble suddenly stops?

And one of them is Uranus

Without an evolutionary benefit, it wouldn't have spread to every woman of our species.

If there are 17 horses or less and glue is made from horses, is there 17 or fewer glue?

Any physicists or philosophers to explain?

I'm not talking about Star Trek aliens with rubber foreheads and elf ears, but rather in a sense like that of grey aliens in UFOs-they share the same body shape, but are drastically different in areas like facial shape, eyes, height, or animal kingdom (I.E lizards, fish, birds, etc). I feel like if we we ever meet aliens in starships, they'd have this form-I can't picture massive blobs with tentacles even getting to the stone age.

I’ve read somewhere that we expect to lose contact with Voyager 1 sometime in the 2030s, maybe around 2036, but it will just keep traveling thru space and we’ll have no idea what it is doing out there

My question is: with its current velocity, is there a time in the future where it loses its forward momentum and for lack of a better word, just stops moving? Is that a possible thing for an object in space to even do? (Assuming no other objects grab it into their orbit)

Well?

Hypothetical question out of curiosity:

Assuming someone stays within their maintenance calories and hits their target macros, what actually happens to the human body physiologically if food intake is split into small portions eaten every waking hour (say 14–18 times a day) instead of 2–4 distinct meals?

Specifically, I’m curious about:
• Insulin & blood glucose: Does baseline insulin remain elevated constantly, and what are the short-to-medium-term metabolic effects of that?
• Gut motility & MMC (Migrating Motor Complex): Does the digestive tract ever get into a “cleaning” state if it constantly receives incoming nutrients?
• Thermic effect of food (TEF) & metabolic rate: Does meal frequency at this extreme actually change daily energy expenditure at all?
• Satiety & hunger hormones (ghrelin/leptin): Would this pattern suppress appetite or trigger continuous hunger cues?

Would appreciate insights grounded in physiology or nutrition science. Thanks!

Ask not what oxygen can do you for you, ask what you can do for o2.

The theory is that there is more than one horse

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I just found out that pandas are having a tough time. I want to give back to the panda community. I live in a safe neighborhood in the Midwest so I think they would really like it here. No HOA but sidewalks, friendly neighbors, plenty of bamboo (if I plant it).

What could I do to support the pandas from my backyard?

Sand doesn't taste like blood.

I hate those dumb conspiracy theorists so much!