Moon craters mostly circular? |
- Moon craters mostly circular?
- Why aren't space-based radio telescopes really a thing?
- Is the Atlantic Ocean mostly dead?
- Could we handle nuclear waste by drilling into a subduction zone and let the earth carry the waste into the mantle?
- Pins & Needles ( what is actually happening ? )
- Why is the “Buzz” on High Voltage power lines Louder on a cloudy day than on a clear day?
- In the Warming Stripes, how can the blue stripes be explained?
- Does the universe as a whole have an orbit?
- Can you fuse any two pieces of the same material in space just like metal?
- Static and dynamic equilibrium?
- How did elephants evolution lead to them having a trunk?
- Would a replacement reaction between a metal and a solution of more then one metal salt result in an alloy precipitate?
- How infectious are you during the inflammatory phase of COVID?
- Can we detect the effect of economic recessions, depressions, etc. on the statistical distribution of e.g. height?
- How strong is the medical scientific case for vitamin C against the common cold?
- Do all planets receive the same wavelengths of light from their star?
- [Evolutionary Biology/Botany] Cactaceae is a very young plant family. Is this why they're so promiscuous?
- Does geology play a part in showing the average temperature of the Earth in a certain time period, like the chemical makeup of the rocks? Or is there more to it in determining geologically what the climate was like in the past?
- Do peoole in comas have cycles like sleep/wake for brain activity or is a general muted brain activity the whole time?
- Does hot weather bother insects?
- Elephant tusks are modified upper incisors, Deinotheriidae of the elephant order are modified lower incisors. Is this likely a case of convergent evolution, fulfilling a similar purpose in different way, or a varied expression of a shared genetic change?
- Why are planets almost perfectly spherical?
- Is there a reason your own "young" bone marrow couldn't put in storage for an immune system "restoration" when you are older?
- How do telescopes, on Earth, take pictures of the space with long exposures?
- How single propeller Airplane are compensating the torque of the engine without spinning?
| Posted: 18 Jul 2022 01:11 AM PDT Hi, on the moon, how come the craters are all circular? Would that mean all the asteroids hit the surface straight on at a perfect angle? Wouldn't some hit on different angles creating more longer scar like damage to the surface? Thanks [link] [comments] |
| Why aren't space-based radio telescopes really a thing? Posted: 18 Jul 2022 08:41 AM PDT So searching for radio telescopes I found that there are almost none currently operating in space and historically very few as well. Most of the big radio dishes in space are turned Earthwards for spying purposes. As a layperson this strikes me as strange because it seems like a radio telescope would be significantly easier to build and launch than an optical telescope. A few possible guesses come to mind based on my small amount of astronomy knowledge: Fewer advantages over land-based observation, relative to an optical scope? Interferometry using huge numbers of smaller ground based dishes simply more useful? Some engineering challenge I'm not considering? [link] [comments] |
| Is the Atlantic Ocean mostly dead? Posted: 17 Jul 2022 11:28 AM PDT This article, citing research from the Global Oceanic Environmental Survey Foundation, claims that the Atlantic Ocean is mostly deprived of life due to plankton population collapse from pollution: https://www.sundaypost.com/fp/humanity-will-not-survive-extinction-of-most-marine-plants-and-animals/?fbclid=IwAR0kid7zbH-urODZNGLfw8sYLEZ0pcT0RiRbrLwyZpfA14IVBmCiC-GchTw It sounds bad, but it's also from a study that may not be peer reviewed (I can't seem to find methodology, authors, or even the text of the study) by a group I've never heard of and seems focused on activism. Is there any way to verify if this study is real? And if it's real, is it scientifically sound? [link] [comments] |
| Posted: 17 Jul 2022 07:15 AM PDT |
| Pins & Needles ( what is actually happening ? ) Posted: 17 Jul 2022 06:01 AM PDT What is actually happening in the body/brain to cause the pins and needles or sharp tingling sensation felt after blood rushes back to a numb body part ? [link] [comments] |
| Why is the “Buzz” on High Voltage power lines Louder on a cloudy day than on a clear day? Posted: 18 Jul 2022 06:03 AM PDT When walking in a parking lot that has High Voltage Power lines over it, I noticed that the 'Buzz' was much louder today, a cloudy day, than it is normally on a clear day. What is the reason for this? Is it even louder when it rains? [link] [comments] |
| In the Warming Stripes, how can the blue stripes be explained? Posted: 18 Jul 2022 04:06 AM PDT The way I understand the Warming Stripes (the blue/red bar code showing global temperature changes), the reds indicate temperatures warmer than what they're supposed to be, while blue indicates colder than what they're supposed to be. But the bar starts with a lot of blue until 1980 or so. Why were temperatures lower than they're supposed until from ~1900 to 1980 and how is that determined? [link] [comments] |
| Does the universe as a whole have an orbit? Posted: 16 Jul 2022 09:38 PM PDT I know it's expanding- but does it have a rotation? Our planet orbits our sun, which orbits our super massive black hole… it seems like rotation is the standard. So does the universe as whole have a spin? And if not why? [link] [comments] |
| Can you fuse any two pieces of the same material in space just like metal? Posted: 17 Jul 2022 01:00 PM PDT We know that on earth here when we cut two pieces of metal the freshly cut surface oxidizes preventing the metal from joining back together, Though in space the metal does not oxidize and is able to fuse back together into a single piece of metal, My question is, is this the case for all material? For example wood, (I don't know why we can't fuse that back together on earth) if we took a piece of wood to the vacuum of space could we fuse it back together just through pressure? And if we can't, can someone explain why we can't? [link] [comments] |
| Static and dynamic equilibrium? Posted: 18 Jul 2022 06:40 AM PDT I dont understand the point of static equilibrium? If the forward and backward reaction rate is zero then why is it not just considered as not reacting at all? Why call it static equilibrium? I dint understand the answers on google like the example of diamond and graphite, is there another possible example of a static equilibrium? [link] [comments] |
| How did elephants evolution lead to them having a trunk? Posted: 16 Jul 2022 05:50 AM PDT Before the trunk is fully functional is their an environmental pressure that leads to elongated noses? [link] [comments] |
| Posted: 17 Jul 2022 04:03 PM PDT Summary: Large solid chunk of steel submerged in a solution of copper(ii) sulfate and tin(ii) sulfate (estimated ration of 10-1). Left to sit for 24 hours. Reaction expected to produce precipitates of metallic copper and tin and a solution of iron(ii) sulfate. Question: Would the copper and tin precipitate out as a metallic alloy, or would they come out as separate layers, crystals, etc.. ? So... I've been messing around with copper(ii) sulfate for the past few days. One of my ongoing experiments started with putting scrap electronics solder in a solution of the stuff. My idea was the tin and lead would replace the copper and leave a solution of pure tin(ii) sulfate and insoluble lead(ii) sulfate and copper metal. The results were promising as I was left with a beautiful turquoise blue solution along with white precipitate of lead(ii) sulfate and copper collecting on the old solder. My only mistake was that I did not have enough solder, and so the resulting solution was still mostly copper(ii) sulfate. It was this mixture of tin(ii) sulfate and copper(ii) sulfate that I added a slightly rusted steel hammer head to. I honestly didn't have a plan at this point other then a quick google search to see where iron was in terms of reactivity. Success on that: I now have an almost pure solution of iron(ii) sulfate. I will likely continue using sulfate to juggle metal ions with reckless abandon. It's the hammer head I sacrificed that I'm really curios about. It's completely covered in copper crystals and I'm pretty certain the tin is mixed in as well. I'll link a picture in the comments. I really want to know if I just accidentally made a copper-tin alloy. [link] [comments] |
| How infectious are you during the inflammatory phase of COVID? Posted: 18 Jul 2022 01:24 AM PDT |
| Posted: 17 Jul 2022 08:58 AM PDT I figure that (economic) hard times equal, at least for some populations/groups, lower caloric consumption than usual, which could have some consequences for body size, in particular, height. In particular if it happens to children or young adults still in the progress of growing, which i figure would be more sensitive to changes in intake(?), and therefore prevent them from reaching their full "potential". Are there any data indicating that, e.g. "population group X experienced economic difficulties in the year Y, which was reflected in a statistically detectable deviation/anomaly in the distribution for height for the group some N years later, compared to how it is normally" [link] [comments] |
| How strong is the medical scientific case for vitamin C against the common cold? Posted: 16 Jul 2022 11:31 PM PDT |
| Do all planets receive the same wavelengths of light from their star? Posted: 17 Jul 2022 04:30 AM PDT We observe our world through the light visible to our eyes, however there are know organisms who see different wavelengths, bees for example can see ultraviolet light. Could there be planets where potential lifeforms might have to evolv to see x-rays or microwaves in order to observe their world? If some planets received a different composition of light waves than ours I suspect it might be possible but I don't know if that is physically accurate. I know there are different types of stars and I know that the consensus is that a planet needs to be in the 'goldilocks zone' of a star to support life. Thought I might ask here and hope it's not a completely stupid question haha thanks. [link] [comments] |
| Posted: 17 Jul 2022 08:08 AM PDT Cactaceae are the only family I know of where almost any species can be successfully grafted to almost any other species. Almost every cactus is capable of producing fertile, hybrids within its genus. Beyond that, it's been found that many cacti are even capable of intergeneric hybridization. Desert cacti are supposed to have diverged and evolved during a worldwide drying event roughly 10-25 mya (I'm assuming the rainforest/vining species evolved at a similar time) This is relatively recent on the scale of plant evolution, is this why they're able to graft and breed so freely? They haven't had enough time to diverge to the point of incompatibility? [link] [comments] |
| Posted: 16 Jul 2022 02:09 PM PDT Had someone mention in another thread that we have historical data on temperatures obtained by geology studies that shows the climate currently doesn't match with the general trend we'd expect to be naturally occurring, so I'm curious as to if there's something geologically that shows the Earth's average climate in comparison to now, and how that shows it's much warmer now than it should be by natural progression. [link] [comments] |
| Posted: 15 Jul 2022 07:32 PM PDT |
| Does hot weather bother insects? Posted: 16 Jul 2022 06:41 AM PDT While I find it too hot to do anything, the insects seem to be busy as always, especially the bees on the lavender. Does the heat have an influence on them? [link] [comments] |
| Posted: 16 Jul 2022 02:20 PM PDT I'm not entirely sure the best way to word this question. Would the large size of the incisors be because of a shared large incisor set of genetic changes, or rather the large lower incisor developed independently of the large upper one. [link] [comments] |
| Why are planets almost perfectly spherical? Posted: 16 Jul 2022 07:59 AM PDT Why are there no odd shaped planets, or planets shaped like cubes etc? [link] [comments] |
| Posted: 15 Jul 2022 07:48 AM PDT It seems a reasonable hypothesis that a portion of the "problems" with an aging immune system come from aging stem cells in your bone marrow. Obviously bone marrow extraction is very painful, but other than that hurdle, is there some reason I am not seeing that storing your own bone marrow on LN2 for later wouldn't be a way to restore the "youth" of your immune system later on in life? [link] [comments] |
| How do telescopes, on Earth, take pictures of the space with long exposures? Posted: 16 Jul 2022 09:29 PM PDT People often say "picture with x hours of exposure" to capture images of the space. Since we are constantly rotating, how do you "fix" the telescope / camera for the long expose to a galaxy, the sun, or whatever is in space? [link] [comments] |
| How single propeller Airplane are compensating the torque of the engine without spinning? Posted: 15 Jul 2022 03:06 AM PDT |
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