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Published October 27, 1994 | metadata_only
Journal Article

Distance to the Virgo cluster galaxy M100 from Hubble Space Telescope observations of Cepheids


Accurate distances to galaxies are critical for determining the present expansion rate of the Universe or Hubble constant (H_0). An important step in resolving the current uncertainty in H_0 is the measurement of the distance to the Virgo cluster of galaxies. New observations using the Hubble Space Telescope yield a distance of 17.1 ± 1.8 Mpc to the Virgo cluster galaxy M100. This distance leads to a value of H_0 = 80 ± 17 km s^(−1) Mpc^(−1). A comparable value of H_0 is also derived from the Coma cluster using independent estimates of its distance ratio relative to the Virgo cluster.

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© 1994 Nature Publishing Group. Received 20 September; Accepted 26 September 1994. We sincerely thank the many scientists, engineers and astronauts who contributed to HST, making these observations possible. This research was supported by NASA, through a grant from the Space Telescope Science Institute (which is operated by the Association of Universities for Research in Astronomy), and by the NSF. This work has benefitted from the use of the NASA/IPAC Extragalactic Database (NED).

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August 20, 2023
August 20, 2023