Hypothetically, if a planet existed orbiting the sun in the same orbit as earth but directly opposite us so behind the sun. Would we know? How would we know? Has anyone ever checked?

Im in the early stages of working on a story focused on an observation station focused on studying humans and earth in general, but I'm want the station to be feasible in its ability to hide. My main questions are

1. How could it visibly hide itself? I've seen many people talk about black paint or "optical cloaking". While the first is obvious in how it works, I'm curious on how possible the second is or if there are any other options?
2. What would the best location be? I'd like the station to be as close to earth as possible, but I feel like directly orbiting the earth would make it very difficult to hide

Im mentally picturing observation posts from stellaris and I'd like the keep that vibe while making it far more scientifically accurate.

Im a physics major freshly into my junior year. Currently taking physics 2 and calc 3. Ive been thinking about my major more seriously lately and considering changing it because i really so want to be able to find a job with just a bachelors degree without having to go back for a masters.

At first I thought engineering was the best one to change to but tbh i dont actually want to do engineering in anything. I think i prefer something more analytical. More mental related than heavy hands on stuff.

But idk what stem degree I can switch too that wont be taken over by AI or atleast not entirely and is in high demand with just a bachelors.

I do want a masters degree but in something completely outside of stem.

For now im just trying to figure out the best major i can change to that will guarantee me a higher chance of getting a job after college with only a bachelor's degree.

Image.

it's a paint chip off a 150±15 yo. Baltimore building. I can count 37 layers with a toy microscope. Fun to speculate the color shift about halfway represents the end of coal as a residential fuel, but could just as well be fashon.

The crumples to the side are to remind us that lead never sleeps. They're not noticable to the naked eye.

Me and a small group of independent researchers are taking a look at Pokémon to see what we can surmise what has inspired the Pokémon company.

I have included an Imgur link to cropped images from files called t2_g_prop03_mdl_alb.png and t2_g_prop05_mdl_alb.png. These are found in the game Pokémon Legends: Z-A in a location called the Lysandre Labs, a secret laboratory where researchers investigate the mega-evolution phenomenon, pivotal not only to the story, but to the world-building of the game.

Our cryptographer has already concluded that the characters (an alphabet dubbed 'pokélatin') often matches English phrases, but the characters are chosen fresh to best match the intent of the artist every time. We have our speculations, but we are also at a bit of a standstill.

The Y-axis probably depicts energy and the X-axis may be either time or an ordinal axis. The saddle of the upper curve is connected with the saturation point of the lower curve. The metastable position is connected to the X-axis with a dotted line, intersecting a horizontal dotted line drawn through the stable position.

Across various of the graphics, equations are depicted of indeterminate meaning. It appears that solar flares are important to some of these graphs, however.

https://imgur.com/a/Jdwli8K

I will be spoiling our current state of speculation in the top comment in spoiler text. However, we would like to know what academics would assume these charts depict.

Hello all, I'm trying to learn a science and am not sure what to go with, I know it sounds silly and I should just find what I like but I was hoping to get peoples opinions on the science they like and how life learning that science is for them? I'm interested in a lot but want to dedicate myself to something and am having a hard time choosing, any advice is very welcome. I'm a 21M in NC and don't really have anyone but myself to rely on. I'd love to hear your stories!

Has science developed models to track and influence societal change in detail among target populations. Things like behavioral traits (honesty, ownership and etc) or philosophies (anti-intellectualism, independence)?

Whenever we talk about time travel, we usually imagine physically traveling through time, where your entire body is somehow transported to the past or the future.

But what if there is another type of time travel?

What if instead of your body traveling through time, your entire memory and consciousness are transferred into your own mind at an earlier point in your life?

For example, imagine you are living in 2026, and suddenly you wake up in your 15-year-old body. You are physically in the past, but you still remember everything that happened to you up until 2026. You have all your future memories, knowledge, and experiences, while your body is now back in the past.

Would this still count as time travel? Or would time travel only be considered real if your physical body itself traveled through time?

I find the idea interesting because both scenarios would technically put you in a different point in time, but in completely different ways.

What do you think?

There has been news from the UN that we are "past the point of no return" with climate change, and social media has run rampant with "we're all doomed" posts and comments. But I dont entirely trust headlines cuse they just want clicks, and anybody with an internet connection can make a post or comment on social media.

So I wanted to ask the scientists. Is it really as bad as they say? Is there really no hope? Are we really all screwed?

I remember reading An Undeniably True Tornado Oddity: Fowl Play by Joseph G. Galway & Joseph T. Schaefer and absolutely cracking up.

What other papers should I read for a good time?

Well, I'm at that age where you start wondering what to do with the rest of your life, and I've been analyzing my options for a few months now. I have so many ideas about what to pursue, but I don't know if I'll like them. Maybe mechanical engineering, or biology (and later neuroscience), or journalism (but let's leave that aside for now).

I grew up in a healthcare family; my sister is a pre-med student, my mother is a psychologist, and my grandfather and uncle were nurses. So I thought the most "obvious" path would be to pursue a scientific one. If I were to take any of the courses I mentioned above, I would definitely go into the field of R&D.

Physics, mathematics, biology, and chemistry have always been my favorite subjects At the same time, I'm a somewhat "artistic" person; I love writing, theater, art, and literature.

You know, I keep wondering if I'll want to secure those careers forever? Will I get bored or realize that the career isn't for me? Imagine surviving five years in a super difficult undergraduate course only to find out that, well, you should have chosen psychology (which yes, I KNOW is a field of science) and become an social worker, or I don't know, maybe you joined the FBI or a lawer because that's also the kind of thing you love?

I just wanted to know how you discovered you wanted to go into the field you work in, what the work experience was like, and what it's like to work in that field (especially for those who work with R&D, research in general)

PS: I wasn't sure if I should put this in the general flair or the teaching flair, sorry if I made a mistake.

I’m curious to see if anyone knows more than what I can find online. I’ve been seeing a lot online about ai being used to generate a dream. Allegedly they are repetition training the ai and it can generate your dream with 60%-70% accuracy.

Get this, the simulation theory has been around for decades now. I was thinking, that there needs to be a pixel size for our observer. Can it be the planck length? Because it literally is the smallest known measurable unit we have..

Black holes theoretically have an exit to a "white hole", if someone could in theory stabilize one and trap enough energy buildup from said exit and cause it to be forced to rebound. It might be what is needed to achieve time travel OR dive into multiverse theory OR wormhole stabilization.

The only two issues is a durable enough material for said machine and it would have to be made in space due to the pure size and weight. Where does one get a martial that might survive entering and exiting and still poke through connected on both sides.. and what type of black hole it is...

And the type of singularity and the risk of it crushing a material that dense into its point or ring halo

A dot singularity might be theoretically possible to enclose and syphon energy from such a dense point in matter...

A halo singularity ring might straight up rip it apart or be able to be used to stabilization advantages... and the spinning of a halo ring singularity black hole complicates things...

In theory at minimum you unlock wormhole travel, at maximum you unlock a entire different realm of theoretically possible things

EDIT: I am very new to actually trying to understand things like spacetime. I am just asking questions.

What I don't quite understand is why different measurements of time necessarily mean that there is no underlying, objective time.

If two planets are moving differently or are sitting in different gravitational fields, then their atoms, clocks and other physical processes can run at different rates relative to each other. We call that time dilation.

But couldn't that just mean that physical processes are happening at different rates, rather than time itself being fundamentally different?

For example, if I had two clocks in different conditions and one ticked more slowly than the other, I'd normally say the clocks are running at different rates. I wouldn't necessarily conclude that there is no underlying time against which both clocks could be compared.

So why couldn't there be some objective, universal time underneath it all - something that exists independently of either observer - with different observers and physical systems simply moving through it at different rates?

And if we say such a universal time doesn't exist, how do we actually know that, rather than simply knowing that we can't measure it directly?

Is relativity actually proving that there is no underlying objective time, or is it just telling us that there is no observable universal time from within the universe?

Hey I had a weird question

Like what if humans in future develops capsules for substitution of food so we don't have to eat so much we just had to take some capsules and it will give us all the essential things we need for our body in already digested and easily absorbale form

So we don't have to use our intestine Nd stomach more so will these organs shrinks and how will ppl look in that situation

im very serious about this and i will do it, i just need the funds and a reactor, any tips on how to get started.

going to try with lasers to make closed timeline curves

Imagine we put some very big mass in a given place. Let's say, the mass of Milky Way central black hole - 4,300,000 suns. It's radius is 13,000,000 km, or 43 second path of light.

I think it would just send "gravity waves" at lightspeed, starting from where the mass is, and forming a sphere growing by 300,000 km in radius each second, to stop growing after 43 seconds.

I've just asked Google AÌ about an "infinite mass black hole". It answered it would not only eat the observable universe immediately, no matter how far, but also delete everything (!) beyond cosmic horizon.

I don't believe about the cosmic horizon, but now I think if those "seconds" to cover 300,000 km each are somehow affected by the growing event horizon.

What would really be?

People who use and misuse amphetamines often look way older than their actual age.
Many adhd medications are precursor to amphetamines… so do they work the same and make you look older?

I was thinking about burn victims, and a strong thought process occured to me. If you took a chunk of human skin from John Doe(who just so happens to need a skin graft), replaced an equivalent chunk off of a growing pig with that skin(with proper blood flow and the necessary immunosuppressants), could that human skin graft grow(as in increase in size) on the pig? Then subsequently be re-transplanted onto the original person? I can't think of any reason why not(besides being unethical and/or difficult), but I couldn't find any research whatsoever on this.

Thanks for reading my late night mad scientist idea.

I'm trying to get my head around 4D hypersolids (correct term?), and the best model I can come up with so far is that of a sequence of 3D solids. This process seems to work fine for representing a 2D shape as a sequence of 1D lines, or representing a 3D solid as a sequence of 2D slices, so it seems logical that I can represent a 4D hypersolid as a sequence of 3D solids, but I'm not certain whether that really holds or whether I'm walking into a mental model that's incompatible with the thing I'm trying to understand.

It feels quite straightforward representing a 4D balloon or a 4D cup, working out what sequence of 3D shapes you would need to prevent air escaping or to hold liquid in four dimensions. However:

When considering slicing a 3D cone in two different dimensions and you might get e.g. a sequence of circles of decreasing size or a growing then shrinking sequence of triangles, and slicing a 3D cup differs significantly depending on whether you're slicing parallel or transverse to the opening - and I currently can't get my head around slicing a 4D cup and how the resulting 3D solids will differ when cutting parallel to the opening.

Is this a reasonable approach, or am I heading into a dead end?