[网络] 沉积物

For many foreigners, part of the attraction of China is its mysterious and ancient splendor. But what attracts Chinese people? It was something that Paloma Sanchez, a certified GIA gemologist from Spain, had to learn through first-hand experience. Pa

发表于:2018-12-02 / 阅读(151) / 评论(0) 分类 2016CRI中国国际广播电台

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(394) / 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(346) / 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(408) / 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(429) / 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(385) / 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(441) / 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(452) / 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(408) / 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(347) / 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(423) / 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(365) / 评论(0) 分类 超大质量黑洞

Tim called Howard. Tim needed help. He needed help with his golf swing. He had a bad golf swing. He was a bad golfer. Howard had a good golf swing. He was a good golfer. Will you help me improve my golf swing? Tim asked. Yes, Ill help you improve you

发表于:2019-01-02 / 阅读(116) / 评论(0) 分类 简单慢速英语阅读

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(398) / 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(418) / 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(438) / 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(418) / 评论(0) 分类 超大质量黑洞

BBC Learning English Weekender Poles in the media Callum:Hello, I'm Callum Robertson and this is Weekender. One of the largest groups of new migrants to Britain are Poles. In 2004 Poland entered the European Union which gave Polish people much great

发表于:2019-01-16 / 阅读(420) / 评论(0) 分类 Weekender

Todd: So, Kadi, you are from Estonia. Can you talk about gender roles for the new generation compared to the older generation? Kadi: Yes, in Estonia, we have this kind of Western type of family, a woman doesn't have to be a housewife. She can work. S

发表于:2019-01-31 / 阅读(116) / 评论(0) 分类 原版英语对话1000个

The road through Molesworth high country farm is now open for the summer. It closes again at Easter. Molesworth is in the northern part of the South Island. Molesworth is the biggest farm in New Zealand. It is 180,787 hectares. It has about 10,000 be

发表于:2019-02-06 / 阅读(181) / 评论(0) 分类 新西兰英语
学英语单词
-making
acquisition of right
allergy-producing compound
Alliaria petiolata
alopecian
angelicality
annealing lehr
anti-coincidence detector
application awaiting examination
arteria collateralis ulnaris inferior
artificial transaction
automatic aiming
blade insertion hole
buying and selling of foreign currencies
by product recovery
calhan
capillary fissure
center of track
colored sheet glass
composite rocket engine
conus sponsalis sponsalis
coolant recirculation
corolla limbs
cyproheptadine
dental orthopaedicss
diminishing assets
direct-current excited reactor
diterpenoid alkaloid
dull-gray
earnings from nontrade items
editing point search
effective phase difference
electrode arm
elevating arc
ellisella robusta
erythrophobic
exchange fund cover
extracting roots
family brand
fatheaded
fill the bill
first class
flash vaporization
floating barograph
floral stimulant
foreign trade arbitration
free fluid
Gary Kasparov
Geraldton wax
glenting
Hanson, Duane
hardware probe
helminthosporium ischaemi
hound down
Hubl's solution
hump you
i-schrud
immunoreactive protein
inflammable gas
key board encoder
Kuran
label declaration section
low-flash
manganese-Pennine
marryin
measured time
media discourse
montasite
norsse
obitzes
one or more
ostrich farm
peligroso
photoelastic study
pinnately trifoliolate
plane screen
public transit
pultz
sabbatical leaves
samandatrine
sanitary waste water
sea fishery
self-financed
Sembawang, Sungai
signifcatory
simultaneous solution method
space database
spirituale
Stolpersteine
Straach
stsl
swath method
swls
tartrates
temporal fold
time-switching multiplex
trans-fatty acid
transannular reaction
tribed
tunnel diode
udorthents
unfundable