most citedHabitat of early life: Solar X-ray and UV radiation at Earth's surface 4-3.5 billion years ago

163 citations · 163 across the 1 of their papers we have counts for

collaborators

1 paper

astro-ph1998

Hubble constant from sosie galaxies and HIPPARCOS geometrical calibration

G. Paturel, P. Lanoix, P. Teerikorpi +5

New distances, larger than previous ones, have been obtained for M 31 and M 81 based on the geometrical zero-point of the Cepheid Period-luminosity relation provided by the HIPPARC…