Ed WEILER: "the Hubble, when it was launched, represented an increase in capability of other telescopes on the ground by a factor of ten."
维勒：“哈勃发射后比其它地面望远镜的观测能力有了十倍级的提升。”
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。
The Hubble, when it was launched, represented an increasing in capability of other telescopes on the ground by a factor of ten.
哈勃的升空，代表了地面上其他望远镜的观测能力也加强了十倍数。
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