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H0 [news]

Vinay

The latest measurement of Hubble’s Constant (Riess et al., 2011, ApJ, 730, 119, 2011; arxiv:1103.2976) —

H0 = 73.8 ± 2.4 km s-1 Mpc-1

2 Comments

  1. atul wrote:

    So this keeps increasing with time?

    Tuesday, May 17, 2011 at 8:31 pm | Permalink
  2. Vinay wrote:

    Yes, H0 does change with time, and there is evidence that it was lower in the early Universe. But this change is too small to notice on a human timescale. The word “latest” in the post above refers to the improvement in precision of the measurement.

    Tuesday, May 17, 2011 at 9:41 pm | Permalink