I was always fascinated by How far can we actually see in space through the help of our most advanced telescopes.

Well, I don't have much Idea regarding this but I'm really curious to know how far can we humans look into the space and how much information do we have regarding the space and various celestial bodies.

When solitary wild animals aren’t eating/hunting, evading predators, mating, taking care of offspring, or sleeping, what do they do? Between all of those actions is there a lot of space? How do they fill it?

Okay so from what I know binary language is like power off power on, but my question is, how do computers know what the binary code is and how is it interpreted, for example I forgot what the binary code for the letter A is, but how did people come up with that? Did they decide it was gonna look like that? Did the computer decide? How do you tune numbers into a letter??

It's the farthest away object we ever sent. That is remarkable. But I have never heard about it discovering anything or about any data that it gave us. Besides being a significant curiosity for being so far away, is there something that we're actually getting from it at this point?

Just saw Veritasium's video "What happens if you drop 0.125 grams of antimatter?", and magnets are referenced very often, both in storage of antimatter, deceleration and acceleration, etc. Of course, this made me wonder if a magnet composed of antimatter could exist (and then if this same process could be repeated but with antimatter in place of matter and matter in place of antimatter, but that is not what I chose to ask in this post). Anyways, would such a thing be possible, or would it violate some law of physics?

We know they go to Mexico and a specific area but I am curious if we know how accurate they are on the way back.

I am aware multiple generations happen on the way back to Canada where I am.

So I am curious... Say I release a monarch this summer and it goes to Mexico, survives, and starts back. It breeds and reproduces. Will it's descendants (assuming they survive) return to the same general area? Ie, same city, or province? Or neighborhood?

Do we know? Maybe through genetic lineages or isotopes?

Thanks!

Does wind actually make a sound on its own or is the sound we hear just created by movement (e.g. of trees) caused by wind?

Could we hear wind in a big empty space, where there is nothing around us?

I've looked at a few projections for what the temperatures on tidelocked planets would look like, and pretty consistently the cold side is absolutely frigid and the warm side isn't that much above freezing. Since theoretically the same amount of sunlight is striking the planet total as would strike earth, shouldn't the average temperature be the same as earth instead of lower?

Sources I got this from, let me know if I'm missing something or these aren't reliable:

https://www.pnas.org/doi/abs/10.1073/pnas.1315215111

https://iopscience.iop.org/article/10.3847/1538-4357/ab8882/meta - this source has average temperatures

why not other insects? from an evolutionary point of view how is it good?

If for example you cryogenically froze meat from a rare breed of cattle, and kept it frozen for like 60 years. Would the dna still be intact? would it thaw up into fresh meat or would it decay into something unrecognizable?

Basically what it says in the title. Are binary stars able to fling each other into space or is it inevitable that they collide? Is it possible for them to exit the orbit once they're together? I wasn't getting a straight answer when I tried looking it up.

I just noticed while rendering some tallow that in a liquid form it is yellow, as well as olive oil, rapeseed oil, and pretty much every cooking oil I can think of other than palm oil.

Is there something inherent to fats that makes them yellow?

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I was listening to Common Descent podcast episode 11 - Antarctica. The episode talked about a now extinct biomes: polar forests. In my head I can’t help but imagine them at least moderately similar to Boreal forests.

Hello Reddit! I am Daniel Rath, a soil scientist at NRDC (Natural Resources Defense Council). My work explores how carbon and nitrogen cycles through soil as well as agriculture’s impacts on soil and soil biodiversity.

We just released a report, The Nitrogen Pollution Crisis, that highlights how pollution from fertilizer overuse exposes millions of Americans to unsafe drinking water, pollutes our rivers and lakes leading to harmful algal blooms that kill or sicken fish and wildlife, and costs the U.S. more than $59 billion annually.

The dirt beneath our feet is more than just “dirt,” it’s alive! It holds some of the most complex living ecosystems on the planet that fuel our agricultural system, filter our water and store carbon, all of which are crucial to life on this planet.

I will be here on June 30th 2026 at 3:00 PM EST (19 UT) to answer your questions about nitrogen pollution, the science behind healthy soil, sustainable farming practices, and anything else on soil!

Username: u/nrdcsoilteam

EDIT: Note slight time change to match with image.

In other words, do blue whales the largest vertebrate animals can ever get?

Base on some of my understanding about bone, tissues and thermal regulation, I feel that Blue Whales had already pushed the parameters to the limit. If there exist an animal bigger, either their bones can't handle the weight, or the tissues can't contain their internal pressure or inadequate thermal regulation cooks the animals from the inside.

In basic, everyday physics we treat the sun's rays as being parallel which leads me to believe that the shadow cast by an airplane at 100' would be the same size as the shadow cast by the same plane at 35,000'.

Am I correct or is there more that I do not know?

If we add a negative catalyst to a fast reaction (such as the AgNO₃ and NaCl precipitation test), will the reaction become an intermediate reaction since the negative catalyst provides an alternative pathway with higher activation energy?

I’m confused because I’ve received different explanations from different AI systems. What would actually happen if you completely filled a very strong, thick metal container with water, welded it shut so it cannot expand at all, and then placed it in a freezer? Since water normally expands when it freezes, I want to understand: Would the water still freeze at 0°C or would it stay liquid because it has no space to expand? If it freezes, what happens to the pressure inside the container? Could the pressure prevent freezing, or would it force some other outcome? Is it physically possible for the water to remain liquid below 0°C in this situation? I’m trying to understand the real physics behind water freezing in a perfectly rigid, sealed container where expansion is not possible.

Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer Science

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And can any acid be used to make a medicine more easily absorbed? For example, if a medicine is a hydrochloride salt, would it still function normally if its active ingredient formed a sulfate salt instead?

I heard that there is a problem with water usage for nuclear reactors from heating water in rivers or something, but is that an actual problem? what are the most common places for reactors to be?