Before Hubble was launched in 1990, the estimates of the Hubble constant varied by a factor of two.
在哈勃望远镜1990年发射前，哈勃常数的估值受计算因子该取1还是2的影响而各不相同。
But nobody was ever sent to prison for espousing the wrong value for the Hubble constant. There is always room for more data to argue over.
但是，没有人因为坚持了错误的哈勃常数而被送进监狱，永远都允许建立在数据之上的讨论。
The most widely accepted value for the Hubble constant right now is 72 kilometers per second per megaparsec, obtained by the Hubble Space Telescope.
目前哈勃常数最被广泛认可的值是每秒每百万秒差距72千米，这个值是由哈勃空间望远镜测出的。
H0 is the Hubble constant, or parameter that indicates the rate at which the universe is expanding; and distance is the galaxy's distance from the one with which it's being compared.
其中，速度表示星系后退的速度，H0为哈勃常数，也即宇宙膨胀速率的参数，而距离指的是星系与相比较星系之间的距离。
Hence it is proposed that the temperature and the density of electrons in a rich cluster and the Hubble constant H0 may be determined from the observations of the IR-background distortion.
因此，通过对畸变的观测，可以确定富星系团内电子的密度和温度以及哈勃常数h_0。
Combining the Hubble constant measurement with estimates for the density of the universe, the team determined that the universe is approximately 12 billion years old - similar to the oldest stars.
结合哈勃常数和当前宇宙密度估值，团队确定宇宙大约有120亿岁了——与最老的恒星寿命一致。这个发现同时澄清了以前那些估值引起的似是而非的唠叨。
Combining the Hubble constant measurement with estimates for the density of the universe, the team determined that the universe is approximately 12 billion years old - similar to the oldest stars.
结合哈勃常数和当前宇宙密度估值，团队确定宇宙大约有120亿岁了——与最老的恒星寿命一致。这个发现同时澄清了以前那些估值引起的似是而非的唠叨。
应用推荐