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PEOPLE IN AMERICA -February 17, 2002: Bessie Coleman By Vivian Bournazian VOICE 1: I'm Shirley Griffith VOICE 2: And I'm Ray Freeman with the VOA Special English program, People in America. Today we t

发表于:2018-12-01 / 阅读(228) / 评论(0) 分类 People in America

In January 2000, John Dubinski set out to calculate the final fate of our galaxy, the Milky Way, and that of our nearest neighbor, Andromeda. The Andromeda galaxy is actually falling towards the Milky

发表于:2018-12-07 / 阅读(393) / 评论(0) 分类 超大质量黑洞

It means that Silk and Ree's theory may be right and if it is also right that supermassive black holes helped trigger star formation, then it must mean that all giant black holes and their galaxies ar

发表于:2018-12-07 / 阅读(345) / 评论(0) 分类 超大质量黑洞

Four times a year, Ghez focuses the telescope on the stars of the very heart of our Milky Way. She is looking for the telltale high speeds that reveal the presence of a black hole. The center of the M

发表于:2018-12-07 / 阅读(405) / 评论(0) 分类 超大质量黑洞

In every galaxy scientists looked at, they found evidence for a supermassive black hole. NGC 3115 NGC 3377 NGC 3379 In M31 and M32 In total there is probably 20-30 or so black holes that have been fou

发表于:2018-12-07 / 阅读(426) / 评论(0) 分类 超大质量黑洞

When the results came down from the telescope he saw something that was completely unexpected. The picture from the active galaxy where he hoped to find a black hole was unreadable. NGC 1068 was just

发表于:2018-12-07 / 阅读(382) / 评论(0) 分类 超大质量黑洞

In March 2000, two astronomers made an extraordinary discovery, one that is set to overturn our understanding of how the universe formed. We're never going to see a time like this in astronomy again.

发表于:2018-12-07 / 阅读(438) / 评论(0) 分类 超大质量黑洞

But we are just one in 125 billion galaxies of different shapes and sizes spinning through space. Yet scientists haven't been able to explain how a single one of these galaxies was created. Galaxy for

发表于:2018-12-07 / 阅读(447) / 评论(0) 分类 超大质量黑洞

A supermassive black hole is quite simply gravity gone mad. An object of such concentrated matter its gravitational pull is insatiable. Nothing can escape it, not even light itself. Anything that gets

发表于:2018-12-07 / 阅读(406) / 评论(0) 分类 超大质量黑洞

This ferocious heart of brilliant hot gas is called a quasar. Scientists thought this whirling mass might be caused by a giant black hole sucking up gas and stars, literally feeding on the center of a

发表于:2018-12-07 / 阅读(346) / 评论(0) 分类 超大质量黑洞

By measuring how fast these stars were moving, he could prove if there really was a black hole at the center of an active galaxy. I picked a galaxy nearby which is called NGC 1068, an active galaxy, w

发表于:2018-12-07 / 阅读(421) / 评论(0) 分类 超大质量黑洞

When it's feeding, a giant black hole creates a bright burning gas disk around it and then for some reason, it stops feeding, leaving a dark, deadly core lurking menacingly in the center of the galaxy

发表于:2018-12-07 / 阅读(364) / 评论(0) 分类 超大质量黑洞

AMERICAN MOSAIC - Black Friday, MREs and Rihanna's 'Talk That Talk' MARIO RITTER: Welcome to AMERICAN MOSAIC in VOA Special English. (MUSIC) Im Mario Ritter. Today we play new music from Rihanna ... We also ask some Americans what they like to do on

发表于:2018-12-16 / 阅读(133) / 评论(0) 分类 2011年VOA慢速英语(十一)月

Bessie Coleman was the first African American Female PilotWritten by Vivian Chakarian (Theme) VOICE ONE: I'm Faith Lapidus. VOICE TWO: And I'm Steve Ember with People in America in VOA Special English. Today we tell about Bessie Coleman, the first Af

发表于:2019-01-02 / 阅读(125) / 评论(0) 分类 名人轶事

Those stars don't feel the black hole. They feel the rest of the stars in the galaxy. They don't know or care that the black hole is there. If you took the black hole away from the galaxy, they would

发表于:2019-01-02 / 阅读(394) / 评论(0) 分类 超大质量黑洞

If, as it now seems, every single galaxy has a black hole at its heart, this can't be a coincidence. Perhaps black holes are an essential part of what galaxies are and how they work. No one had expect

发表于:2019-01-02 / 阅读(417) / 评论(0) 分类 超大质量黑洞

This correlation is the most important thing we've learned about supermassive black hole so far. Astronomers are always looking for correlations. Whenever you find one that's really tight like this on

发表于:2019-01-02 / 阅读(435) / 评论(0) 分类 超大质量黑洞

Silk realized that the energy from this newly formed quasar would create intense temperature changes in the surrounding gas. This would cause the gas around the black hole and its newly formed quasar

发表于:2019-01-02 / 阅读(411) / 评论(0) 分类 超大质量黑洞

A straight-A student got a C in cooking class and didn't like it. She didn't like it so much that her dad filed a complaint in federal court about it. He alleges that the teacher, who is white, discriminated against his daughter, who is black. He see

发表于:2019-02-02 / 阅读(188) / 评论(0) 分类 365个英语简短小故事

I need another story Something to get off my chest My life gets kind of boring Need something that I can confess Till all my sleeves are stained red From all the truth that I've said Come by it honestly I swear Thought you saw wink, no I've been on t

发表于:2019-03-02 / 阅读(160) / 评论(0) 分类 英文最新流行歌曲
学英语单词
aeruginosus
al uqaylah (el agheila)
amphiprion polymnus
as old as the hills
assiminea lutea
bacchante
bakery goods
baseless needled felt
biaxial crystal pleochroism
bindery emulation
Borkowice
buy wholesale and sell retail
capsuloplasties
CFU-TL
China Interocean Transport Inc.
choledyl
corbieres
cracking-off stand
culbert
dangerous property
delofting
density of highway network
dental cyst
dickes
dissociation time
diurnal temperature range
divisome
dog-fisher
electric hydraulic servoactuator
emergency power power supply
Eugene Of Savoy
evergreen coniferous forest
EXN
Felixdorf
fracture fluid coefficient
ground guidance computer
Humphrey Bogart
impedance match
Isuropsis
jaunted
keep to somewhere
kenbridge
Langenneufnach
lankford
lemon soap
liverying
Luthan
Moro reflex
mushing
myoporthosis
one's bread and butter
oystry
p-nitroacetophenone
parenchym
Parmellaceae
pemphigus haemorrhagica
perchings
Perrignier
photosynthetic
Poincare electron
political economy of environment
pop a drum
prehallus
prospecting baseline
raised bog
regular tetrahedrons
relative standard error
relaying current transformer
rubbericebottle
rude ore
scrap baling presses
section gauge
shell stitches
single action process
skelasthenia
skip area
sleeping hibiscuss
small heart syndrome
sounding device
square-integrable
stichopus noctivagus
swap data
table traversal
taking the stand
talmessite (arsenate-belovite)
telegram copy
the human body
thurbert
titra(ta)ble alkalinity
total haul
trumpeteers
tumbles
two frequency method
unsheriffs
veracity
visual readout
volume shrinkage mass
weak-forms
well head assembly
wet lay-up technique
wobbling drum
zinc diphenyl