New Zealand Girl Reacts to UNIVERSE SIZE COMPARISON 3D 🤯🪐

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[eragon]

Its actually bigger than that...that was just the "Observable universe"

[mattperiolat]

I can only quote a line from the movie Contact: “If it is just us, it’s an awful waste of space.”

[btube]

04:08 That moment when Betelgeuse drops.

[Pixelologist]

"How do we even measure that? Is it just educated guesses?"

Mathematics is a powerful tool. Along with knowledge of how light works, how everything (including light) is affected by gravity, and all sorts of other specialized astrophysical are much more than just educated guesses.

[TheNeonRabbit]

“Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space."
~Douglas Adams, The Hitchhiker's Guide to the Galaxy

[Timmycoo]

"observable universe" which as far as we know is trillions smaller than the actual one.

[HemlockRidge]

A star with planets is a "system" (as our "Solar" system, our star is called Sol.). Many stars together is usually called a "Galaxy". A number of Galaxies together is a "Cluster". A number of clusters is called a "Super Cluster".

[jdm]

“IT’S HUGE...IT’S HUGE!”

That’s what she said.

[Cyberplayer]

6:35 It's because light travels at 300, 000, 000 meters per second. That is the yardstick we use to measure distances outside our solar system because of the scale of the universe. Notice the sizes near the end were measured in lightyears. The distance light travels in a second ( 300, 000, 000 meters) * 3600 * 24 * 365 is a lightyear.

[rkain]

That fear you feel is very natural. We all feel it when we first start learning about the universe’s scale and vast emptiness. It goes away over time the more you learn, even as you’re left stunned by new information. Even still, it’s impossible for us to truly conceive the scale of Earth relative to ourselves, let alone the scale of celestial bodies and galaxies.

[jonathanallen]

The Sun is actually a star and most of the others are stars just huge but from earth so small and Ceres is a dwarf planet and callisto is a moon of either Saturn or Jupiter and the black thing are black holes and nebula are where stars are born

[Hoganply]

That something so small relative to the universe is capable of contemplating its place within it is magical, and it excites me thinking about how likely it is that other life forms, even if far apart, are doing something similar.

[triplebackspace]

I get overwhelmed three times over with videos like these .
First is by the size of the planets and stars.
Then by the distances between them.
Finally by the shear number of them there are.

[OnceFan]

To learn more of this, look at Carl Sagan's series, "Cosmos, " which is available on youtube. Although there is some new information that has been gained since the series was produced in the 1970s, it illustrates the fundamentals with an eloquence and beauty that has never been matched. The first episode includes a brief overview of the size and content of the observable universe and it also begins to explain how we gained this knowledge (including a wonderful description of how Eratosthenes first determined the size of the Earth, 2200 years ago, as the first step in how we learned to measure the distances you asked about.) Neil deGrasse Tyson's updated version of the series is also very good, but I see it as a supplement, not a replacement, to Sagan's original series.

[HenrikJonasson]

There is another video called "How the Universe is Way Bigger Than You Think
" with commentary over it, and it blows my mind every time I watch it.
Would love to see a reaction to it

[sarathkumar-grsy]

the sizes are measured by parallax method, Doppler Spectroscopy and Transit Photometry

[HX]

Humans can never imagine :
1. What happens after death
2. How large is the universe

[standingpatriot]

Fun fact most of these big stars are called “Red Supergiants” and are one stage away from collapsing/exploding. The impact to us would be small but everything around it would be instantly vaporized or absorbed.

[ThomasKnip]

Actually, that is just the size of the visible, measurable universe. We simply have no clue yet what is beyond that radius - and we most likely never will.

[coldassassin]

A lot of the measurements are done by forming a triangle using earths orbit around the sun which we know, and then the parallax (angle) from the object to the two furthest points of our orbit, then simply use triangle rules to find the distance (and correct for other stuff) but that's the basics of most measurements I think :)