How can understanding our spectral and spatial biases in measuring the Sun’s diameter enhance the accuracy of spectroscopy for determining the sizes of exoplanets and other stars? 🌟
I think it would be important to understand other stars output and "gravity well" in order to determine if the rock orbiting an interesting star could be gravitationally relevant to our current human physical needs. Or you could have Ronke Olabisi engineer "some of us" to not give a damn and live on the rock and for reasons I don't understand yet...report back on their findings. [I'd just send a robot probe; but what's the fun in that?] I elect trump to be Ronke Olabisi's first victim ha ha. The truth is all reports wouldn't be science but "look where I am!" - End of report
If we don't have an agreed upon objective or subjective definiton, then it's a pointless question. I doubt people would agree to include the range of the sun's gravitational pull in the measurement of it's diameter
Hey a random human here, earth 2024.. I appreciate you both and whoever else might read this comment. Great conversation and I'm glad i could experience it.
The Sun’s immense size is already mind-blowing, but when you think about the countless other stars out there that dwarf it, it’s absolutely insane. It’s no wonder that trying to comprehend objects of this scale feels almost beyond human capacity.
I heard someone say if you scaled the Earth down to the size of a tennis ball. The largest known star (KNOWN star) would be the size of Philidelphia. 😮.
I will be passing away in the next few days. I just wanted to say thank you for all the laughs and incredible education about the stars and all that surround them. Thank you so very much.
I have a brother-in-law in the same situation. I can't think of anything comforting to say, except, if N.D.T. and others are correct about mater, specifically atoms, which we are all made of, then what an actor once said when asked what he thought happens to us when we pass away, his answer was ' we go home ' and that makes perfect sense to me. Fare travels.
@@DreadfulDrummer: Yep, he's a professional comedian! Imagine if Carl Sagan had one... Robin Williams or George Carlin perhaps? Not that his series wasn't fun for me as a kid!
Me too . I’m happy it’s science though . With one sentence Neil became my science teacher for life . He said you don’t have to be an astrophysicist to learn about the universe or a scientist to learn about science. I had a science teacher tell me in 5th grade that my math skills were not good enough to consider perusing a career in science . I’ve always loved it though. I’m a lot more like Chuck . I’m continually amazed and mind blown by the mass amounts of science we do not learn in school. They are a fantastic team and I always feel great after spending an hour watching Star Talk !
❤ from Sri Lanka 🇱🇰 Being the fans enthused by 'Cosmos' tv series, respect to this wonderful type of explanation with the great sense of humour ! A big thumb up to chuck's amazing support too ! 😄🤙
I wouldn't even know what to talk about if I had a chance to meet up with you guys. I love this channel beucause you explain a lot of different topics in an easy and relaxed way
I've been watching you 2 for a couple years now & I just wanted to put it out there that I believe your dynamic is exceptional. I love the dichotomy of your views on science, yet the agreed subsistence of it all :) . Thank you both for making science, in general, more approachable for all!
I tried to anticipate what this video was going to be about and got excited about the prospect of the value of Pi being different due to gravitational warping of space and time at the "surface" of the sun. I have no idea if this would even be measurable for the sun but it would have been a cool thing to talk about 🙂
i hope chuck read this , bro you make this show hands down. Dont get me wrong we love neil, but you couldnt have this show be as successful as it is with out chuck!!! KEEP SLAYING DRAGONS !!!!
I love Chuck, he's so clever and witty while remaining humble. I want to see a movie where Chuck is teleported to another timeline and he has to explain Einsteins theories and all of advanced physics to a new civilization. The ultimate test of what he's learned. A better version of idiotocracy
If you really think about it, the volume of the sun ends where nothing would be impacted anymore by it's gravitational field or it's infrared (heat) rays. So weeelllll behind our solar system. So in a way, we all live in our sun.
This is what I thought at first, too. However, the Earth is also a sphere (roughly) and if all those Earths were stuck next to each other they would collapse under their gravity into a a sphere and there would be no spaces between them. So to form a sphere the same volume of the Sun would require many more than a million Earths. (The actual volume ratio between the Earth and the Sun is about 1.3 million)
You are absolutely right. I was reading the comments and no one seemed to understand the problem. Chuck made it clear when saying 100 ³ (the word CUBE!) made the wrong assumption to stand up. Too bad NDT didn't see what we did.
@@diegofernandez4789 The only thing wrong with the calculation is not accounting for packing density of spheres, and at best I think that gets you somewhere around 70+% of the filled out volume. This means over 70% of 1.3 million, which is close to 1 million, so the numbers sort of work out anyway. And as others here have pointed out, if you ignore the space between the spheres (squish them together) then it would be 1.3 million.
100x100x100 is indeed 1M but that would be filling a cube not a sphere, since the 100 is "only" at the central axes. and would decrease as one goes to the edges. *pushesnerdglasses*
Yes @@loccc88, the volume of a sphere is 4/3πr^3 or πd^3/6, which is roughly speaking d^3/2. But again he was just talking wrt to powers for understanding
I love how mathematicians use the maximum distance possible between two points of a given set as the definition of the *diameter*. Be it a square, a triangle, a random group of disjoint points, you can easily give its (finite) diameter this way! Thus, even is radius is smaller towards the pole, we use the bigger one for diameter 🙂
I love how you make something as apparently simple as the size of the Sun an interesting topic of discussion. It was very informative. I'm not sure where to submit a question so I'll put it here in the hope you'll see it. I've seen a lot of articles about the Alcubierre warp drive, how they would work, and etc... what I'd like to know is what would happen if someone accidently came in contact with the warp bubble? Since the warp bubble is distorting space and time, and the individual is in that particular space and time, would nothing occur or would they be spaghettified by the distortion?
This video is another pure gold....in 10 minutes not only did we know about the sun & the earth we also learned far more deeper stuff...the stuff that Neil mentioned about the many faces of truth is actually really really deep although they made light of it in the episode..nature has knack of 'hiding' (as a figure of speech) deep & profound truths in plain sight in seemingly unrelated and/or trivial matters...i think it has something to do with patterns manifesting repeatedly in ever so different ways (many times subtly) in many (completely different) things...one just needs to be curious and attentive to nature & it will teach...if we listen..this is often told like a cliche...but all serious thinker often vouch for it...quite simply because its true.
Isn't the sun considered a sphere and not a cube? 100^3 isn't the right calculation. If that radius is 50 earths, then wouldn't the volume be 524,000 earths?
No the, diameter of the sun is 100x the diameter of the earth, then the radius of the sun is also 100x the radius of the earth. Since both are spheres, the volume of the sun is 100^3 times the volume of the earth. If you can pack 100^3 earths into one sun is another question, since spheres don't pack the entire space it is less than that.
Ive said it all along, the sheer scale of everything in the universe as compared to us, is mind blowing. We are literal specks in this enormous universe. What we hold dear means absolutely nothing in the grand scheme of things.
Loved this episode! I feel this is what school curriculums are missing, nuance that reveals how fascinating everything is, even the things that might seem boring initially.
Yes you're right, the sun is white. White light is made up of roygbiv (red orange yellow green blue indigo and violet light). All those light colors combine to make the visible light spectrum, white. What NDT says there is, not only are our eyes biased to just the visible light spectrum and not other spectrums like X-rays or gamma rays or something like the Magentosphere, it's also specifically biased to the just the yellow light part of the visible white light coming from the sun. He says this to remind us of how narrow and limiting our vision is and we should not be using that to determine the edge of the sun as it actually spans welllll beyond what the eye sees!
The sun is white till it reaches earths atmosphere, the gases, carbon dioxide and oxygen make the light to humans on earth appear yellow. If you were in space, above earths atmosphere you would see white. Our atmosphere filters out all the other colors. This is why cars use yellow lights for fog lights, yellow light can "punch" through the fog. Also the same reason the sky is blue and not black.
Your point is because you see the sun thats why its real? Poor quote and poorer logic 🤣 God is everywhere, same are particles, we don’t see but they do exist
The Indian astronomer and mathematician Aryabhata I (476-500 CE) estimated the Earth's circumference to be 24,835 miles (39,968.058 km) in his book Aryabhatiya. He arrived at this estimate by studying the positions of the sun and moon at different times in the same latitude. Aryabhata's calculation was used for many years without change.
You think you're something, standing there with your worries and woes? The sun, that cosmic furnace, has been burning for billions of years, dwarfing our petty concerns. ❤
This entire theory also applies to other aspects of the Universe. "Don't declare this to be the diameter of the sun if it's only based on what your eyes see". We shouldn't declare something to be fact until all other aspects have been exhausted to determine the limits of whatever we're talking about. I'm speaking of closing the door on elements of a spiritual life (not religious life) if we haven't experienced all facets of what is!
Amusingly, we often refer to our visible light bias with "Mark One Eyeball," even though we're using the _latest_ version of that evolutionary technology. 7:59 Neil assumes a cubic sun with this estimation. The correct estimation would be about 525,000 for a sphere.
This strategy has been a game-changer for me. I followed your advice and got 8 out of 9 - the best result I've had in ages. Thank you for sharing your knowledge and experience with me
Hey,You are the only astrophysicist i can reach out to.i found you on youtube and really like your videos.so i have a theory which i hope interests you.(dont mind the spelling or vocabulary mistakes,english is my second language) Introduction:we know general relativity is a theory explained by the great scientist Einstein. in it, Gravity isn't a force but the curvature of an invisible fabric named space-time. my theory shares the basic concepts of general relativity and also extension of a small part of general relativity. The theory & The connection between general relativity & my theory: so, my theory says that Time is a fabric that moves through another dimension and is another layer that is on top of space-time. when there is a other layer with a lot of mass like a Blackhole (or) neutron star the spacetime gets curved and is also pulling the time fabric causing it to stretch. The time fabric is like a fabric in real life at small masses it doesn't stretch as much & only curves, but when there is a big mass it stretches. The fabric closer to the mass will be more stretched.The fabric directly under a blackhole is so streached that it breaks. you might be thinking why is the part under the blackhole the only part that breaks & the part under a giant star doesn't, blackholes are just mass stuffed into single small part. you might be thinking, what does that have to do with this, we learned that Preassure = force -------- Area Smaller the area more the area more the preassure.So while inside a blackhole timestops. Conclusion:my theory is just a theoretical continuation of einstiens theory. In his theory he says Gravity disturbas time, but in my theory is an explaination of time dialation & what happens to time that causes time dialation. Bonus facts:Gravity & time are connected in another dimension. (Gravity means curvature of spacetime), when there is a small dip in spacetime there is only a slight strech of fabric of time,when there is a big dip there is a big streach in fabric of time. I am a 14 year old kid and dont have enough knowledge to prove my theory is real.i hope this intrested you.😅
Genuine question: If the conversation around the suns circumference includes the possibility that it should be measured with the magnetosphere, shouldn’t the conversation around the circumference for the earth do the same?
i calculated the acceleration and velocity of Neil's reflex. the reflex has occurred exactly at 7m.30s.13 frames per second and his hand moved approximately ~40cm at the final point at 7m.30s.16 frames per second, judging by Chuck's arm length to the right which is equal to 0.4 meters the hand had moved over 3 frames in a video with 30 frames per second, therefore, t = (3 frames) / (30 frames/seconds) = 0.1 seconds and to find the velocity v = 0.40 meters / 0.1 seconds = 4m/s and the acceleration from his initial velocity to 40 cm is: a = (4m/s) / (0.1s) which is equal to 40 meters per seconds squared to put this in perspective, Niel's hand accelerated 10 times faster than an olympic athlete in a 100-meter dash, a cheetah can accelerate up to 15m/s^2 so Niel's hand was 2.6666667 times faster, moreover, if we were to make the analogy for the acceleration of gravity on earth at 9.8m/s^2 with earth's current diameter of 12,742 km, Niel's acceleration can simulate the gravitational acceleration of a super earth with the same density as earth by the formula for gravitational acceleration g = (4*pi*G*rho*R) / (3) and since the density is constant we just use a linear ratio (g_2/g_1) = (R_2/R_1) where g_2 is the acceleration we want (40m/s^2), g_1 is earth's acceleration (9.8m/s^2), R_2 is the radius we are looking for and R_1 is earth's radius (6.371 km). we rearrange the equation for R_2 = R_1 * (g_2/g_1) = 6371 * (40 / 9.8) = 25,988 km in radius and we multiply by 2 to get the diameter 51,976 km thus, for Niel's reflex acceleration of 40m/s^2 to imitate the mass of a super earth, the diameter of the planet would have to be 4.08 times our planet's diameter or 51,976 kilometers!
I seen this comment right after my initial he has some of the quickest movements I've ever seen on video, athlete level speed and you sir confirmed it. Thank you, this is legend!.
