To know how the Universe is expanding might be of little practical interest, though it is of utmost importance for our understanding of all cosmological interrelations. The Hubble parameter H 0 is the term that determines expansion. Usually, Einstein's equations are taken as a starting point, ...
aA guest paying full fare can invite another guest to join the tour at half price 正在翻译,请等待... [translate] a组立 The group stands[translate] awhip her butt 鞭打她的靶垛[translate] a理由是早上记忆好 The reason is the early morning memory is good ...
我们生活的宇宙持续时间足够长 We live in the universe that lasts long enough 我们可以继续存在下去 膨胀速度不快也不慢 that we can be here, but expands gently enough 我们有时间形成我们的世界 that we have time to form. 宇宙已经延续了一百三十八亿年 The universe has lasted for 13.8 billion years...
The concept of an expanding universe was advanced by the American astronomer Edwin Hubble (1889-1953), who is the namesake for the Hubble Space Telescope. In the early 20th century, Hubble became one of the first astronomers to deduce that the universe was composed of multiple galaxies. His s...
aAstromomers believe that the expanding universe is the result of an enormous and powerful explosion called the Big Bang theory may explain how the universe formed. Astromomers相信扩展宇宙是结果的极大,并且称大轰隆理论的强有力的爆炸也许解释怎么宇宙形成了。[translate]...
Welcome to 6 Minute English, the programme where we bring you an interesting topic and six useful words or phrases. I'm Neil. Dan And I'm Dan. Today we're talking about one of the last mysteries of science. No, not if...
Today the universe is still expanding in a process called inflation. And it may go on accelerating outwards from the original point for ever. The latest theories show that only a tiny proportion of the universe is made up of the kind of matter that we can see; about 15% of it is ...
Billions and billions of galaxies the universe is so vast, we can't even imagine what those numbers mean. =>数十亿和数十亿星系的宇宙如此浩大,我们甚至无法想象这些数字的意思。 But 14 billion years ago, none of it existed until the Big Bang. ...
Everythingintheuniverse 在大爆♥炸♥发生那一刻由物质组成 ismadefrommattercreatedin thefirstsecondsofthebigbang. 每一个星球 Everystar... 每一个行星 everyplanet... 每一粒原子 everyatom... 每一株草,每一滴水 everybladeofgrass, everydropofwater. ...
The word "observable" is key; the sphere limits what scientists can see but not what is there. But though the sphere appears almost 28 billion light-years in diameter, it is far larger. Scientists know that the universe is expanding. Thus, while scientists might see a spot that lay 13.8...