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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(325) / 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(275) / 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(342) / 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(367) / 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(313) / 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(370) / 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(335) / 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(342) / 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(289) / 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(355) / 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(300) / 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(72) / 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(332) / 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(357) / 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(374) / 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(344) / 评论(0) 分类 超大质量黑洞

Democratic presidential contender Barack Obama travels to the Middle East and Europe next week as he seeks to bolster his foreign policy and national security credentials with U.S. voters. Obama is also expected to visit Iraq and Afghanistan soon. O

发表于:2019-01-13 / 阅读(87) / 评论(0) 分类 VOA标准英语2008年(七月)

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(332) / 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(60) / 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(78) / 评论(0) 分类 新西兰英语
学英语单词
Abū Saida
acrostichal hairs
air sus
Alburg
alternating-current transformer
apterogaleruca uenoi
armenocide
azobilirubin
babysat
beavy chain disease
besit
Blavatsky, Helena Petrovna
blushlike
bodying
breechloaders
burrdrill
center in form
cercospora miscanthi
chapelain
Chuzelles
climatic testing
control rod scram worth
Crossgare
cutting dynamics
data sorting algorithm
Davis, Jefferson
digital position transducer
diphenylbutylpiperidines
dynamic noise reduction
eddy loss
Ellipsoidina
ending sign
Ferula syreitschikowii
feutres
fible-fable
finger height
fold-over noise
fuckedness
glabrousness
Gnetum gracilipes
granite-gneiss
high definition screen
hook-like structure
HTR with (a) gas turbine
ICOP
interrupt control register
Isonoe
joslin
kneelest
Kryptol stove
kvas
least squares criterion
lockbolts
locked rotor voltage
Matese, Monti del
megachallenge
mud blasting
multi-turn rotary actuator
music instrument
musicality
N.B.L.
narrow-end-up mould
nervivesicales superiores
neutral vowel
normal mercruous phosphate
normal sort program key ranging procedure
o attenuator
odria
orbitomete
ownwords
oxoglutaric acid
patchset
perimenopausal
plexus dentalis
pneumogastric
polyaffinity
radar vector on course
Schlosser's treatment
screw coupler
self-surrender
smallworlds
smart client
spleen malpighian corpuscle
splet
sproling
standard colour chart
strepsipteras
taiwanomyia ritozanensis
tariff act
Tayura
teacher centre
teleosaurs
tripropylborine
two stroke direct-coupled machine
U. S. D.
ulcerating sclerosis
unlevable
update components
upland coast
voltol process
walkway duct