Do powerful space telescopes able to see back to a younger, smaller universe see the same thing no matter what direction they face? Or is the smaller universe "stretched" out over every direction? |
- Do powerful space telescopes able to see back to a younger, smaller universe see the same thing no matter what direction they face? Or is the smaller universe "stretched" out over every direction?
- If salt raises the boiling temp of water, is there additive that will let water freeze at a higher temp also?
- Is SARS-CoV-2 more infectious/contagious than regular coronaviruses before the emergence of COVID-19?
- Why does cold welding only happen to metals?
- What features of an aircraft and the aircraft's engine allow an aircraft to supercruise at supersonic speeds?
- How do mammals that dive deep into the ocean such as seals and whales not get decompression sickness?
- How did phyla emerge rapidly following the Cambrian explosion?
- Uranium turns into lead, but there's still uranium. Why?
- Are there any forces that get stronger the further away something is?
- Can proteins be converted to fats in the body?
- What causes the sun (and other stars) to fire out coronal mass ejections?
- When did blood evolve into existence?
- How can there be Ice in Jupiter if it's so warm?
- What triggers the trees to change the colour of their leaves before they fall in autumn?
- I recently read through Gerta Keller's criticism of the Chicxulub impact extinction theory, and I was wondering - what made Chicxulub so much more lethal than comparable impactors, such as the asteroid that made the Manicouagan basin?
- Why were cesium atoms used as the gold standard for telling time?
- Why does the exposed tree bark of a rainbow eucalyptus changes colour when exposed to air?
- What is the difference between the Trewartha climate classification and the Koppen-Geiger classification?
- What amount of mm wavelength microwave radiation from the Sun reaches Earth's surface?
- Why can we not put plastic eating bacteria in the ocean to help clean the plastics?
| Posted: 30 Oct 2021 08:36 AM PDT I couldn't find another similar question in my searches, but I apologize if this has been asked before. The James Webb telescope is poised to be able to see a 250,000,000 year old universe, one which is presumably much smaller. Say hypothetically it could capture an image of the entire young universe in it's field of view. If you were to flip the telescope 180° would it capture the same view of the young universe? Would it appear to be from the same direction? Or does the view of the young universe get "stretched" over every direction? Perhaps I'm missing some other possibility. Thank you in advance. [link] [comments]  |
| Posted: 30 Oct 2021 08:21 PM PDT |
| Posted: 31 Oct 2021 03:53 AM PDT So there are a lot of different coronaviruses but SARS-CoV-2 is quite more deadly than the regular coronaviruses which usually just gives mild upper respiratory tract disease. I was wondering if regular coronaviruses are just as contagious as SARS-CoV-2 or that they are similar. [link] [comments]  |
| Why does cold welding only happen to metals? Posted: 30 Oct 2021 08:32 PM PDT Fair warning– I am not an engineer, scientist, or otherwise bearer of technical expertise! So if a simple explanation is possible, it would be much appreciated. Anyway, here's my question: I've known for some time about the phenomenon of cold welding, where two pure pieces of the same metal will spontaneously fuse/weld when in contact in a vacuum because there's no oxidation layer to keep them separated. But why does this just happen to metals? Why doesn't this happen to other crystalline structures? Especially since those other crystalline structures don't oxidize to begin with. [link] [comments]  |
| Posted: 31 Oct 2021 12:31 AM PDT |
| Posted: 30 Oct 2021 06:38 PM PDT A human dives to a depth of 1500 ft and has to spend hours resurfacing so the nitrogen in their blood does not bubble. Does a sperm whale have to take the same amount of time ascending from depth or do they have physiological mechanisms to mitigate that? [link] [comments]  |
| How did phyla emerge rapidly following the Cambrian explosion? Posted: 30 Oct 2021 09:17 AM PDT Following the Cambrian explosion, phyla began developing relatively rapidly: within 6-10 million years. What drove such fast emergence of biodiversity? [link] [comments]  |
| Uranium turns into lead, but there's still uranium. Why? Posted: 31 Oct 2021 03:09 AM PDT I guess this is more a shower thought, but I'm curious as to the answer. Its my understanding that uranium eventually turns into lead. So if all the uranium that was going to exist on the earth had been here since Earth's formation, it should be all be lead by now? But there is still uranium to be found. So... Why? Are there processes that occur within the earth to create new sources of elements, or were the 'conditions just right' to preserve the uranium from decaying into lead? I guess this applies to most ores. I'm just wondering if they all came at the formation, or if Earth can make more of some of them with processes like how coal becomes diamonds. If all uranium was uranium at the start of everything, I would think it should be lead by now. [link] [comments]  |
| Are there any forces that get stronger the further away something is? Posted: 30 Oct 2021 04:41 PM PDT Gravity for example gets stronger the closer two objects are. Do any forces have the opposite effect? [link] [comments]  |
| Can proteins be converted to fats in the body? Posted: 30 Oct 2021 11:55 AM PDT My biology teacher explained that since proteins are made of C, H, O and N the body cannot convert it to fats or sugars since they're made out of C, H, O and the body cannot break that bond. That means that technically eating only protein will make it impossible to gain weight but how is that possible? [link] [comments]  |
| What causes the sun (and other stars) to fire out coronal mass ejections? Posted: 30 Oct 2021 01:28 PM PDT |
| When did blood evolve into existence? Posted: 30 Oct 2021 10:30 AM PDT Bonus questions: 1) do all animals have blood? 2) of animals that have blood, are there instances where the blood is a color other than red? [link] [comments]  |
| How can there be Ice in Jupiter if it's so warm? Posted: 30 Oct 2021 11:42 AM PDT Hey all, So I've been reading up on gas giants for my DnD campaign. One article on Jupiter said that 'the planet's core is made up of layers of metals and rocks, along with methane ice, ammonia ice and water ice' (https://www.space.com/6164-jupiter-core-big-thought.html). Searching for more information on methane ice, I found that 'methyl clathrates are molecules of methane that are frozen into ice crystals. They can form deep in the Earth or underwater, but it takes very special conditions, with high pressure and low temperature, to make them.' (https://nsidc.org/cryosphere/frozenground/methane.html). But as far as I understood, while there is a ton of pressure at the core of Jupiter, it's also disgustingly warm. So how can there be ice there? [link] [comments]  |
| What triggers the trees to change the colour of their leaves before they fall in autumn? Posted: 30 Oct 2021 11:05 AM PDT Is it temperature or daylight duration? What is the signalling pathway? [link] [comments]  |
| Posted: 29 Oct 2021 10:14 PM PDT Was it something about the specific geology of the Yucatan as opposed to Quebec and the locations of other comparable impactors, or was it the combined effect of Chicxulub and the Deccan Traps, where comparable impactors hit during relatively calm and stable periods of the climate? [link] [comments]  |
| Why were cesium atoms used as the gold standard for telling time? Posted: 30 Oct 2021 01:00 PM PDT |
| Why does the exposed tree bark of a rainbow eucalyptus changes colour when exposed to air? Posted: 30 Oct 2021 02:07 AM PDT Rainbow eucalyptus gains it rainbow like colour, due to the exposed tree bark (naturally bright green) that changes to various colours(purple,blue,orange,etc) when exposed to the air. Google searches doesn't go into detail why. any help is greatly appreciated. Physics related answers are preferred but any answers are welcome :D [link] [comments]  |
| Posted: 30 Oct 2021 09:01 AM PDT This question came to me while I was looking at these two climate maps of the USA and comparing them to Europe. What struck me as odd is that in the Trewartha map, the middle US has a climate class of Do which is found in western Europe but in the Koppen map, the middle and southern (eastern side) US is all Cfa which is rarely found in Europe. For reference this is what I was looking at: PS: I'm quite new to this subreddit and I don't know what I'm doing. [link] [comments]  |
| What amount of mm wavelength microwave radiation from the Sun reaches Earth's surface? Posted: 30 Oct 2021 08:23 AM PDT I thought this would be a really easy google search, but turns out it wasn't simple. I'm trying to figure out the amount of radiation that reaches the ground from the Sun in terms of wavelength and power so that I can compare it to what's used for the 5G wireless network. That's around 24-48 GHz, or 6mm-1.2cm wavelength. Power will probably be in watts per meter squared. Any info on this or leads to follow so that I can come up with parts of the answer would be greatly appreciated! [link] [comments]  |
| Why can we not put plastic eating bacteria in the ocean to help clean the plastics? Posted: 30 Oct 2021 06:40 AM PDT We found a species of bacteria that eats plastic, why can't we put it on the plastic pollution and help get rid of it? [link] [comments]  |
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