SciShow Space
SciShow Space
  • Видео 897
  • Просмотров 215 887 034
We Don’t Know Why Astronauts Get Motion Sick
A majority of modern astronauts experience any one of a suite of symptoms scientists collectively call Space Motion Sickness, or SMS. But despite knowing about it for nearly as long as humans have gone into space, we still don't know exactly what causes it, or how to predict which astronauts might lose their lunch.
Hosted by: Hank Green (he/him)
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Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, David Brooks, and AndyGneiss!
Support SciShow Space by becoming a patron on Patreon: www.patreon.com/SciShow
Or by checking out our awesome space pins and other products over at DFTBA Records: dftba.com/scishow
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Просмотров: 69 380

Видео

The Biggest Star In The Universe Is Too Small
Просмотров 124 тыс.Год назад
R136a1 is the most massive star that astronomers have ever discovered. It's so massive you might think the laws of physics wouldn't allow it. But it turns out that its current mass estimate is actually so low that it threatens our understanding of how the universe got to be where it is, today! Hosted by: Reid Reimers (he/him) Huge thanks go to the following Patreon supporter for helping us keep...
This Toxic Liquid Telescope from the 1850s Is Finally Useful
Просмотров 274 тыс.Год назад
Sometimes looking into a pool of a toxic liquid holds the secrets of the universe-or maybe just this one time. Hosted by: Hank Green (he/him) Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, David Brooks, and AndyGneiss! Support SciShow Space by becoming a patron on Patreon: www.patreon.com/SciShow Or by checking out ...
JWST: Looking Beyond The Pretty Pictures
Просмотров 82 тыс.Год назад
The James Webb Space Telescope isn't just for finding Pinterest worthy pictures, we're finding some amazing details in the sometimes blurry background photos. Hosted by: Savannah Geary (they/them) Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, David Brooks, and AndyGneiss! Support SciShow Space by becoming a patron ...
Is Our Solar System Missing Moons?
Просмотров 76 тыс.Год назад
You might be pretty confident that when a moon is there it’s there to stay, but that’s not always the case. Moons may have a history of disappearing. Hosted by: Savannah Geary (they/them) Correction: 05:19 Well, this is half right. The moons don't actually orbit the same distance from Mars and orbit on opposite sides of the synchronous radius. Sorry about the mistake! Huge thanks go to the foll...
The Future of the Search for Life
Просмотров 97 тыс.Год назад
Get 50% off your SciShow Space calendar today by heading to complexlycalendars.com/products/scishowspace Astronomers have found more than 5,000 planets in the last three decades, but that’s not nearly as exciting as potentially coming across the first extraterrestrial creatures. And we may finally be in a position to make that discovery. Hosted by: Hank Green (he/him) Thumbnail Courtesy: TMT Ob...
Eavesdropping On Other Worlds
Просмотров 53 тыс.Год назад
We usually only get to use our sense of sight in exploring the universe, but that hasn’t prevented scientists from trying to listen in. Hosted by: Hank Green (he/him) Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, David Brooks, and AndyGneiss! Support SciShow Space by becoming a patron on Patreon: www.patreon.com/Sc...
Atlas: The Little Rocket That Still Can
Просмотров 41 тыс.Год назад
Order your SciShow Space Pinboard and all SciShow merch here: dftba.com/scishow In 1962, John Glenn went into orbit on an Atlas rocket, and thus began a family of rockets that lasted for 60 years! Hosted by: Hank Green (he/him) Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, David Brooks, and AndyGneiss! Support SciS...
What's Going to Space in 2023?
Просмотров 100 тыс.Год назад
2022 was a pretty exciting year for space science, but what news might we expect in the coming year? Hosted by: Savannah Geary (they/them) Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, David Brooks, and AndyGneiss! Support SciShow Space by becoming a patron on Patreon: www.patreon.com/SciShowSpace Or by checking ou...
Did Earth's Continents Come from Space?
Просмотров 73 тыс.Год назад
Earth didn't always have the land beneath your feet, but what might have caused it to form is a bit of a mystery. Hosted by: Savannah Geary (they/them) Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, David Brooks, and AndyGneiss! Support SciShow Space by becoming a patron on Patreon: www.patreon.com/SciShowSpace Or b...
A Big Bang Beginner’s Guide | Compilation
Просмотров 53 тыс.Год назад
While there's still a lot that astrophysicists don't know about the Big Bang, there are some things we do know. So today, let's get caught up on the Big Bang basics. Hosted by: Reid Reimers (he/him) Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, David Brooks, and AndyGneiss! Support SciShow Space by becoming a patro...
Space Superlatives of 2022
Просмотров 41 тыс.Год назад
As we wrap up 2022, we'd like to celebrate a few of the cosmic “winners” discovered this year, at least while they still hold their titles. Hosted by: Reid Reimers (he/him) Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, David Brooks, and AndyGneiss! Support SciShow Space by becoming a patron on Patreon: www.patreon....
This Year in Space News (That Isn't JWST)
Просмотров 49 тыс.Год назад
If you’ve been distracted looking at the amazing photos The James Webb Space Telescope has taken, not to worry. Here are three other stellar stories from the last year of space science! Hosted by: Savannah Geary (they/them) Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone for...
Five Of The Biggest, Baddest Supernova Varieties
Просмотров 78 тыс.Год назад
Head to complexlycalendars.com/products/scishowspace to buy your 2023 SciShow Space calendar today! Supernovae are only rare to the passive stargazer, but if you’re an astronomer studying them, you get to see some of the most brilliant explosions in the universe. Here are five of the most significant supernovae known to science. Hosted by: Savannah Geary (they/them) Huge thanks go to the follow...
How Can Stars Quake Without Tectonic Plates? (And Other Seismic Mysteries) | Compilation
Просмотров 103 тыс.Год назад
Astronomers have seen quakes or volcanos on many celestial bodies that don't have tectonic plates like Earth does. So let's take a look around the solar system and see how various seismic features happen. Hosted by: Hank Green (he/him) Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, David Brooks, and AndyGneiss! Supp...
How Blocking the Sun Makes Mars Hotter
Просмотров 41 тыс.Год назад
How Blocking the Sun Makes Mars Hotter
How Do You Find the Moon’s Best Picnic Spot?
Просмотров 54 тыс.Год назад
How Do You Find the Moon’s Best Picnic Spot?
Are Space Sounds Lies?
Просмотров 64 тыс.Год назад
Are Space Sounds Lies?
What A Wonderful Universe | Compilation
Просмотров 62 тыс.Год назад
What A Wonderful Universe | Compilation
Earth’s other moons
Просмотров 184 тыс.Год назад
Earth’s other moons
Why Does Physics Love Donuts? | Compilation
Просмотров 58 тыс.Год назад
Why Does Physics Love Donuts? | Compilation
Early Earth Microbes May Have Eaten Raw Meteorites
Просмотров 31 тыс.Год назад
Early Earth Microbes May Have Eaten Raw Meteorites
Holes In Space That Aren't Black | Compilation
Просмотров 81 тыс.Год назад
Holes In Space That Aren't Black | Compilation
Life on an 8-Hour Planet
Просмотров 73 тыс.Год назад
Life on an 8-Hour Planet
In Space, Anything Is Possible | Compilation
Просмотров 70 тыс.Год назад
In Space, Anything Is Possible | Compilation
The Spacecraft That Wasn't Designed To Land, But Did
Просмотров 49 тыс.Год назад
The Spacecraft That Wasn't Designed To Land, But Did
How to Make a Dark Matter Planet
Просмотров 60 тыс.Год назад
How to Make a Dark Matter Planet
Great Minds: Conny Aerts, the Starquake Professor
Просмотров 30 тыс.Год назад
Great Minds: Conny Aerts, the Starquake Professor
Why Space is the Place For Halloween Lovers | Compilation
Просмотров 43 тыс.Год назад
Why Space is the Place For Halloween Lovers | Compilation
Why are Astronomers So Bad at Naming Things?
Просмотров 64 тыс.Год назад
Why are Astronomers So Bad at Naming Things?

Комментарии

  • @user-pc1vk2ku2n
    @user-pc1vk2ku2n 7 часов назад

    Yes the Russians can control the weather fool using satellites

  • @SUNSHINE-me8gz
    @SUNSHINE-me8gz 14 часов назад

    No way we are alone no fresking way this is huge galaxy human maybe maybe it cant be seen with a human eye ? Maybe hmm infored ? Negative filter no the chemical make of of glass would have to be changed and altered so much to each planets chemical composition maybe then we can see what our neighbors are doing today telescope 🔭🧪🔭 🧬 make of compound of the planet or atmosphere its lens is made of mutant experiments #Humutant #homomutant hmm sapiens? A jungle creature best suit in a jungle environment so id build a starship insulated with plant ☘️☘️☘️ life 🧬 the living ship organic life steel iron minerals soil even chemical composition of space can survive in space with it humidifier water natural water self humidifier seems possible seems very possible

  • @michaelkahn8744
    @michaelkahn8744 18 часов назад

    We've spent almost a century to find Dark Matter and Dark Energy but still there's no sign of them. No matter what we do, a thing that doesn't exist cannot be found even if we can justify its existence mathematically. May be it is time to find an Alternative Way to Explain Dark Matter and Dark Energy. 4-D Hypershere model of Universe can easily explain Dark Matter, Dark Energy, Void and even the reason why the measurement values of Expansion Rate are around 70 km/sec-Mpc. Dark Matter, Dark Energy, Gravity, Void and Antigravity, ... all these are same phenomena. They just look different. I agree to the idea that the interaction between mass and space must be explained with quantum mechanics. But that doesn't mean gravity is the QM phenomena. That's because gravity is not a force. Dark Matter, Dark Energy, Gravity, Antigravity, Void... all these are just joint effects of the expansion of the Universe and the curvature of spacetime. Details are given below. Einstein’s theory of General Relativity states that spacetime is curved by the presence of mass. This curvature influences the motion other objects with mass and gives rise to gravitation. Thus, gravity is a result of geometric features in spacetime. However, we also observe gravitational effects - curvature of spacetime - in areas without any detectable mass. This has given rise to the concept of dark matter, which is matter that does not interact in any detectable way with normal matter, except through gravity. So, there is some large quantity of dark matter scattered throughout the universe, which curves spacetime and causes gravitational effects just like normal matter, but we cannot see or detect it with any known method. An alternative theory to the identity of dark matter is proposed - it is not matter at all, but rather an intrinsic curvature of spacetime. In other words, spacetime is not naturally flat. Even in the absence of matter, we observe some inherent curvature of spacetime. So, the question is now - why is spacetime naturally curved? Why is it not flat in the absence of mass? The universe is 4-dimensional, with 3 spatial dimensions and one dimension in time. Rather than consider time as a linear dimension, we can consider it as a radial one. Therefore, rather than describing the universe with a Cartesian coordinate system, we describe it with a 4-dimensional spherical coordinate system - 3 angular coordinates, φ1, φ2, φ3, and one radial coordinate in time, t. We live on the 3-dimensional surface of a 4-dimensional bubble which is expanding radially in time. Thus, the Big Bang represents t=0, the beginning of time. The crucial point is that the expansion of the universe is not homogeneous in all directions. The expansion rate at one point on the bubble’s surface may differ slightly from another point near it. The universe is only roughly spherical in 4 dimensions, the same way that the Earth is only roughly spherical in 3 dimensions. The same way we observe local mountains and valleys on the surface of Earth, we observe local “mountains” and “valleys” on the surface of the universe bubble. The inhomogeneity of the expansion of the universe has given rise to natural curvature of spacetime. This natural curvature causes the phenomenon of “dark matter”. “Valleys” in spacetime pull matter in, similarly to the warping of spacetime of massive objects. So “dark matter” is really “valleys” in spacetime that are expanding slower than the regions surrounding it. These valleys tend to pull matter in and create planets, stars, and galaxies - regions of space with higher-than-average densities of mass. Conversely, “mountains” in spacetime will repel matter away, an “anti-gravitational” effect, which gives rise to cosmic voids in space where we observe no matter. Each point on the surface of the universe bubble traces out a time arrow in 4-dimensional space, perpendicular to the surface. These time arrows are not parallel to each other since the universe is not flat. This causes points to have nonzero relative velocity away from each other. It is generally accepted that the universe is expanding faster than observable energy can explain, and this is expansion is believe to be still accelerating. The “missing” energy required to explain these observations has given rise to the theory of dark energy. The time dilation caused by non-parallel time arrows can be proposed as an explanation for dark energy. Alternatively, dark energy is real energy coming from potential energy gradients caused by non-parallel time arrows. As a sanity check, we can calculate the expansion rate of the universe based on the universe bubble model. Since the radius of the universe bubble is expanding at the speed of light in the time direction, it increases at 1 light second per second. Therefore, the “circumference” of the 3-dimensional surface increases by 2π light seconds per second, or about 1.88*10^6 km/s. This expansion is distributed equally across the 3-dimensional surface, so the actual observed expansion rate is proportional to the distance from the observer. At present, the age of the universe is estimated to be 13.8 billion years, so the radius of the universe bubble is 13.8 billion light years, or about 4233 megaparsecs (3.26 million light years to 1 Mpc). Thus, we can calculate the expansion rate of the universe, per megaparsec from the observer, as: Expansion rate = ((d(circumference))/dt)/radiusofuniverse=(1.88*〖10〗^6 km⁄s)/(2π*4233Mpc)=(1.88*〖10〗^6 km⁄s)/26598Mpc=70.82(km⁄s)/Mpc The popularly accepted empirical expansion rate is 73.5 +/- 2.5 km/s/Mpc, so our calculated value is close. There may be some additional source of expansion (or observed red shift) to make up for the discrepancy. For example, if two adjacent points have some gravitational gradient due to non-parallel time arrows, then light passing through these points will be red-shifted. - Cited from www.academia.edu/82481487/Title_Alternative_Explanation_of_Dark_Matter_and_Dark_Energy

  • @universalreviews-nc7lp
    @universalreviews-nc7lp День назад

    Very Good

  • @zes3813
    @zes3813 День назад

    etc wrr

  • @sergiotorres1069
    @sergiotorres1069 День назад

    Damn really this needed by space x rn

  • @KCHunter
    @KCHunter День назад

    So, if you can get a rocket that returned to Earth with the energy collected ….

  • @JabelldiMarco
    @JabelldiMarco День назад

    How long might a solar panel survive in space? How frequent will we need to shoot rockets into orbit to replace the defect ones (and who will replace them)? And how much energy (and money) will this (and the production of the spare parts) cost and how much GHG produce, and how log will it take for the cheap solar energy from space to return this investment? Concerning the smaller versions: why not combine microwave transmission with those near earth orbits? And I hope nobody really expects any population to be subjected to continuous microwave bombardement from space just to get the energy they could also get from any plant far away through some cable?

  • @daneh5262
    @daneh5262 2 дня назад

    We don’t want any of this. Leave life alone stop playing god

  • @paulfraley1533
    @paulfraley1533 2 дня назад

    What mars needs is a deflector screen. My people can help engineer an equitorial deflector screen for Mars.

  • @paulfraley1533
    @paulfraley1533 2 дня назад

    Wrong, human.

  • @bmaster461603
    @bmaster461603 3 дня назад

    Maybe the other side of a dark whole is a kugelblitz

  • @joelsandler1119
    @joelsandler1119 3 дня назад

    If the moon never existed, we would not be here.

  • @colleendougherty4475
    @colleendougherty4475 3 дня назад

    the wobble of the stars from all the planets tugging on them from there different orbits proves einsteins curved space push thearies wrong and so does the buldge in the tides linning up with the sun and moon gravity is from mass . dont know why they still keep pushing this nonsense . tesla said everything einstein ever said was wrong .

  • @lenerflenerius7808
    @lenerflenerius7808 4 дня назад

    If we barely see the milkyway with our naked eye imagine another planet closer to the center

  • @lenerflenerius7808
    @lenerflenerius7808 4 дня назад

    If we barely see the milkyway with our naked eye imagine another planet closer to the center

  • @GPT_Stories_
    @GPT_Stories_ 4 дня назад

    Shut up MEG.

  • @hellifiknow1315
    @hellifiknow1315 5 дней назад

    Universe is NOT flat. Dark matter 75% ? Science said there was no ether , now it needs there to be for it's math to work out. Science is so corrupt. Changing its story to suit it at the time. Science is very dependent on weak minded to just follow whatever it says

  • @CaliR1D3RR
    @CaliR1D3RR 5 дней назад

    6-13-2024: it already happened, we are waiting for the light to hit us. Is currently a big deal in the news. Between now and September is the new estimation. FYI

  • @heavymetalnewsdesk
    @heavymetalnewsdesk 5 дней назад

    Because Earth is Flat

  • @MrRAH6889
    @MrRAH6889 5 дней назад

    Hey hank! Have you ever done anything with mattpat? I feel like you 2 would hit it off!

  • @superfinevids
    @superfinevids 6 дней назад

    The aether is real. Science will never find a way to measure it because of their narrow mindedness.

  • @saigonmonopoly1105
    @saigonmonopoly1105 6 дней назад

    sun center we orbit around up outside

  • @saigonmonopoly1105
    @saigonmonopoly1105 6 дней назад

    sun murcury venus artic earth antartica up

  • @saigonmonopoly1105
    @saigonmonopoly1105 6 дней назад

    more like down from up top face right?

  • @saigonmonopoly1105
    @saigonmonopoly1105 6 дней назад

    cold nitrient antartic current up from where?

  • @saigonmonopoly1105
    @saigonmonopoly1105 6 дней назад

    it earth open end up away opposite artic north into the heating sun mean melting artic summer

  • @saigonmonopoly1105
    @saigonmonopoly1105 6 дней назад

    antartica

  • @saigonmonopoly1105
    @saigonmonopoly1105 6 дней назад

    heat expand out

  • @saigonmonopoly1105
    @saigonmonopoly1105 6 дней назад

    two ways either by moon or frozen ice pulling moisture inward

  • @AdnanDanipagieh-gl8hh
    @AdnanDanipagieh-gl8hh 6 дней назад

    Planet nibiru will come 😂😂😂😂

  • @michaelggriffiths
    @michaelggriffiths 7 дней назад

    In all seriousness, The US will need to be very circumspect and reasonable in aportioning resources to other nations. Obviously US security will always be paramount, but space is big, there's no reason why, under proper supervision lesser nations might not be able to govern areas that do not impinge on American Security.

  • @dianelee7471
    @dianelee7471 7 дней назад

    Thank you for a nicely condensed synopsis on what Dr. Rubin found.

  • @tslmutier2726
    @tslmutier2726 7 дней назад

    BRO THIS IS MAD

  • @Ggdivhjkjl
    @Ggdivhjkjl 8 дней назад

    What's that exoplanet where it rains glass sideways?

  • @unslept_em
    @unslept_em 9 дней назад

    space isn't a total vacuum, right? are there any stretches of space where light is slow enough that other things can go faster than it?

  • @MishelFayad
    @MishelFayad 9 дней назад

    Anyone started the 3 body problem series too? 😅

  • @nycbearff
    @nycbearff 9 дней назад

    Well, that was Newton's interpretation of his observations - and his approximations are ok a lot of the time. But then Einstein gave a more accurate explanation. Mass changes the shape of spacetime - both the space part and the time part. Planets are not moving in ellipses around the sun - they are moving in straight lines through complexly curved spacetime. The sun contains about 99% of the mass in the solar system and if, one day, the sun suddenly vanished, the spacetime it formerly influenced would flatten out. The planets would keep moving in their accustomed straight lines through the altered spacetime and they would leave the flattened region which had formerly been the solar system. Gravity in modern physics is a fundamental interaction, not a force. What we observe results from the interactions between objects with mass and spacetime. Gravity doesn't seem to have a detectable quantum field like the fields of the other three fundamental interactions. This is not intuitive, so it would be much more useful to make a video explaining mass's interactions with spacetime, and how the behavior we think of as gravity emerges from those interactions. And then explain how that supersedes Newtonian physics.

  • @m.t-thoughts8919
    @m.t-thoughts8919 9 дней назад

    What if we would use Plasma?

  • @user-nu7vq6ei5q
    @user-nu7vq6ei5q 9 дней назад

    502nd to comment.

  • @majinvegeta9280
    @majinvegeta9280 9 дней назад

    Why can't I find a video with the earth's moon never existing. It's always if it disappeared. If life did get going without a moon, it would be adapted to such a life, and nocturnal would probably not exist or it would, and the animals would be even more specialized to their environment

  • @tjhouston1280
    @tjhouston1280 10 дней назад

    The BIGGEST question it’s should. Because it might be some key differences between mars and earth that prohibit the planet from ever holding life on it.

  • @cristeaadrian7419
    @cristeaadrian7419 10 дней назад

    Well for sure sun is closer than we think, many will be surprised if one day we have real image of universe. For now we just hear stories and someone who thinks can see many un scientific theories circulating. I talk about an explosion which created only spheres spinning forever, a perfect balance no planet gets closer or crashes on other. Or mystery of the mistake creating life only on a planet where fish survived long enough on land till had legs growing, elephants and dinosaurs wanted to fly got wings but we pretending to be top of the top we still need to build planes or buy tickets. Or people coming from monkeys and all fish dinosaurs or monkeys evolved, transformed but we still see fish and they die coming on land before any chance to evolve. Only we are unable to evolve, see and accept the truth, we just want to eat, drink and feel good, now we forgot to feel good, just want to be rich fast, sacrifice everything and everyone to save a planet by destroying it or going lower than stone age lifestyle. If we are so great and can save planets if we landed on moon why more than 70 years after nobody went to other planet or back to moon including the amazing AI?

  • @Mayhamsdead
    @Mayhamsdead 10 дней назад

    Dogshit clickbait. Then again, what was I expecting from a channel called "SciShow"? Just a bunch of "uhm, akchually!!" Piss off.

  • @NinaYelena
    @NinaYelena 11 дней назад

    Mostly scientists depend on what if to discover thing, but I don't like the at least 13.2 billions because we don't know what beyond CMB then they just concluded thing and they called it theory, hilarious

  • @irisbaez1972
    @irisbaez1972 11 дней назад

    I didn't get anything. I stayed empty same as when I came. What was the purpose of the video?

  • @juliantreidiii
    @juliantreidiii 11 дней назад

    There is not and has never been a dark side of the Moon!

  • @curiousspacecatto
    @curiousspacecatto 11 дней назад

    I'm new to astronomy, I need to ask a quick question. Will the tides influence the orbit? For example, if we take Object A (Earth) and Object B (Moon). The tidal force of the Object A will cause the Object B to drift away right. Will it also apply to Jupiter's moons? I've seen a comment from another video of orbital resonance that this 'stability' won't last longer on a longer time scale.

  • @AnimeSunglasses
    @AnimeSunglasses 12 дней назад

    So I wasn't imagining it!

  • @Realgrande
    @Realgrande 12 дней назад

    Earth doesn't really orbit the sun and Democrats think the Earth is flat.