Cosmic Expansion and Ho: A Retro- and Pro-Spective Note

G. A. Tammann; B. Reindl

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Cosmic Expansion and Ho: A Retro- and Pro-Spective Note

G. A. Tammann·B. Reindl

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Abstract

Attempts to measure extragalactic distances over the last 90 years are briefly described. It follows a short history of the discovery of the expansion of space. Reasons are discussed for the decrease of the Hubble constant from Ho~500 originally to Ho<~60 at present. Remaining problems with Cepheids as local distance calibrators are outlined.

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BibTeX RIS

G. A. Tammann, B. Reindl. 2002-10-02. Cosmic Expansion and Ho: A Retro- and Pro-Spective Note. https://arxiv.org/abs/astro-ph/0208176

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