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Hubble and the light-year | Astronomy.com

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Hubble and the light-year

FROM THE May 2013 ISSUE

Hubble and the light-year

May 2013: Why we should stick to more understandable distances.

By Bob Berman Тљ|Тљ Published: Monday, March 25, 2013

How can we grasp the enormity of space? One thing is sure: We should at least make our units of measurement as intuitive and friendly as possible.

We often fail. Take, for example, cosmic expansion, the Hubble constant. In October, the highly respected Carnegie Observatories determined that its value is 74.3 ТБ 2.1 kilometers per second per megaparsec. The science media reported this verbatim.

Astronomy magazine subscribers can read the full column for free. Just make sure you're registered with the website.