文本记录English

What Did James Webb Really See At The Beginning Of Time?

52m 9s7,313 字数1,191 segmentsEnglish

完整文本记录

0:00

[Music]

0:03

on Christmas morning 2021 a mighty

0:06

rocket burst into

0:09

life quickly climbing away from the

0:11

ground it soared into the cloud Laden

0:13

sky and headed for the darkness of deep

0:17

space its Target was 1.5 million kilom

0:21

from Earth at a place where the

0:23

gravities of the Sun and our planet

0:25

combine in a very particular way in this

0:29

spot known as a lrange point the payload

0:31

would be held in space fixed in relation

0:34

to the Earth as it circles the sun once

0:37

in location this payload began its

0:39

delicate deployment immense sheets

0:42

unfurled to shade it from the glare of

0:44

the Sun as hexagonal mirror segments

0:46

unfolded and clicked into place it then

0:49

waited until it cooled to The Frigid

0:52

background of

0:55

space after several months the device

0:57

was ready for Operation the latest in a

1:00

long line of technological leaps a

1:02

signal was sent from the earth for this

1:03

most recent Observer to awaken to open

1:07

its eyes and appearer into the

1:10

darkness after 30 years and 10

1:13

billion the James web Space Telescope

1:17

had finally

1:25

arrived James Webb possesses a 6 and 1/2

1:28

M mirror and cameras tuned to see in the

1:31

infrared its mission is to map the lives

1:34

of young stars in our own Milky Way and

1:36

hunt for life on planets in orbit around

1:39

other Suns but it was its view of the

1:41

early universe that caused the first

1:45

controversy the power of James web

1:47

sitting far from the glow of the earth

1:49

is its ability to peer far back in time

1:53

its sensitive instruments can discern

1:55

light that has traveled for more than 10

1:57

billion years emitted by the first star

2:00

in the first fledgling galaxies through

2:03

web's eyes we can witness the birth of

2:06

the

2:08

universe astronomers of course had

2:10

expectations of just what web should see

2:12

in the infant Cosmos over the 20th

2:15

century they had come to realize that

2:17

galaxies even our own Milky Way had

2:19

grown over time they start as small

2:22

groups of stars but through collisions

2:24

and mergers small galaxies grow larger

2:26

until over many billions of years

2:29

galaxies with hundreds of billions of

2:31

stars appear in the cosmos but as

2:34

astronomers poured over the new images

2:36

from James web something did not seem

2:39

right as they peered into the epoch of

2:42

the earliest Stars they expected nothing

2:44

but small featuress blobs but instead

2:48

they saw something

2:50

unexpected large well-formed galaxies

2:54

peeking out of the darkness objects that

2:58

made no sense

3:03

for since the turn of the 21st century

3:05

astronomers have believed themselves to

3:07

be in an era of precision

3:09

cosmology they had determined that

3:11

gravity in the universe was dominated by

3:13

a strange dark matter and the expansion

3:16

of the universe accelerated due to an

3:19

even stranger Dark Energy both of these

3:22

have fed into the most accurate model of

3:25

the universe we have a model known as

3:28

Lambda C

3:30

M and yet James web had revealed large

3:34

galaxies appearing to exist in the first

3:36

billion years of the life of the cosmos

3:38

going against the predictions of this

3:40

hardfought model some scientists have

3:43

been driven back to the drawing board to

3:45

revise their theories of Galaxy

3:47

formation but others much more worried

3:49

fear for the very foundations of our

3:52

understanding of the

3:54

universe but this is not the first time

3:56

that new eyes on the sky have demanded a

3:59

revision of the Cosmos since the

4:01

earliest of times people have looked to

4:03

the Stars to uncover the workings of the

4:05

universe and since the earliest of times

4:07

they have been surprised by what they

4:09

saw and so what do we understand about

4:12

those first galaxies forming in the

4:15

black just after the big bang and do

4:17

these surprises thrown up by James web

4:19

derail our understanding of the universe

4:23

or help strengthen its foundations even

4:28

further

4:36

[Music]

4:38

the first food eaten in space was a beef

4:40

and liver paste that Yuri Karin squeezed

4:43

into his mouth like salty toothpaste he

4:46

followed it up with chocolate sauce this

4:49

video has been sponsored by Factor the

4:51

best healthiest meal delivery service

4:53

out there and an Impossible Dream for

4:55

early

4:56

astronauts their healthy menus are

4:58

updated weekly and include include more

4:59

than 27 meals and 33 add-on options you

5:03

can choose your favorite meals or let

5:05

Factor craft your order based on your

5:07

taste preferences and meal history they

5:09

offer keto calorie smart Chef's Choice

5:12

and vegan and veggie options which is

5:14

fantastic for me as I've been trying to

5:15

cut down on my meat consumption Factor

5:18

takes the guesswork out of food shopping

5:19

and meal prep saving you time and energy

5:22

for other things the no hassle prepared

5:24

foods make sure you always have

5:26

something nutritious on hand when you

5:27

don't have time to think about making a

5:29

meal

5:30

so head to factor75.com or click the

5:33

link below and use the code

5:35

H50 to get 50% off your first Factor box

5:39

thanks to factor for supporting

5:41

educational content on

5:45

[Music]

5:49

YouTube The Story Goes that Galileo

5:51

galile was the first to successfully

5:53

turn a telescope to the skies the device

5:57

a simple arrangement of lenses had only

5:59

recently been invented its Earthly

6:01

employment having mainly been navigation

6:03

surveying and of course Warfare but

6:06

Galileo's Focus was the Motions of the

6:10

heavens the invention of the telescope

6:12

is implicitly tied to the birth of

6:14

modern science a little more than half a

6:16

century after Galileo Isaac Newton also

6:19

turning his attention Skyward replacing

6:22

lenses with a silvered mirror he

6:23

revolutionized the design of telescopes

6:26

sharpening the image and constructing

6:28

the Foreigner of day's massive

6:30

telescopes including James web but

6:33

unlike Galileo Newton's observations

6:35

didn't revolutionize the cosmos but his

6:38

discoveries of the laws of motion and

6:39

gravity certainly did now the orbits of

6:43

planets moons and comets were understood

6:46

not to be a sign of the Divine but the

6:48

results of physical laws that pervade

6:51

the entire

6:53

universe astronomical telescopes

6:55

steadily developed after the time of

6:57

Newton and through each Advance more

6:59

more and more light could be collected

7:01

the Improvement of optical systems

7:03

resulting in clearer and sharper images

7:06

astronomers now had the tools to reveal

7:08

the true beauty and complexity of the

7:12

universe and so just what did they

7:17

[Music]

7:20

see as well as stars and planets the

7:23

skies were often home to magnificent

7:25

comets and by the mid 1700s French

7:28

astronomer Charles Messier was hunting

7:30

for these Heavenly Bodies he was looking

7:33

for the fuzzy coma of a comet formed as

7:36

ice and dust a boiled off the cometry

7:38

surface but in his search he found

7:40

himself constantly

7:42

frustrated we now know that comets are

7:44

rocky icy bodies that orbit the Sun and

7:47

Messier had expected the fuzzy coma to

7:49

move night after night during the

7:51

comet's travels but he came across

7:54

numerous fuzzy objects that stubbornly

7:56

remained in place not changing at all

8:01

Messier decided to elay his frustration

8:03

by cataloging all these anomalies

8:05

ignoring them if he happened to spot one

8:07

and so though messier's catalog of 110

8:10

objects mainly contains simple clouds of

8:12

gas within our Milky Way unknown to

8:15

Messier many of his objects were much

8:18

much more

8:21

distant throughout the 19th century with

8:23

better telescopes astronomers had found

8:25

structure in some of messier's objects

8:28

swirling spiral patterns hinting the

8:30

objects must be rotating eventually two

8:33

giants of astronomy went head-to-head to

8:36

settle the question and by 1921 a great

8:40

debate on the nature of these spiral

解锁更多

免费注册以访问高级功能

互动查看器

观看带有同步字幕、可调节叠加层和完整播放控制的视频。

免费注册以解锁

AI 摘要

获取由 AI 立即生成的视频内容摘要、要点和结论。

免费注册以解锁

翻译

一键将字幕翻译成 100 多种语言。以任何格式下载。

免费注册以解锁

思维导图

将字幕可视化为交互式思维导图。一目了然地了解结构。

免费注册以解锁

与字幕聊天

提出关于视频内容的问题。直接从字幕中获取由 AI 驱动的答案。

免费注册以解锁

从您的字幕中获得更多

免费注册并解锁交互式查看器、AI 摘要、翻译、思维导图等。无需信用卡。

    What Did James Webb Really See… - 完整文字记录 | YouTubeTranscript.dev