Contents

05 September 1997
Vol 277, Issue 5331

About The Cover

A giant impact scar dominates the topography of asteroid 4 Vesta determined from Hubble Space Telescope images. The 460-kilometer-wide crater may be the site of origin for about 6 percent of all meteorites arriving at Earth. This image shows color-coded topography of Vesta dominated by the crater and its central peak [maximum relief shown is 24 kilometers from the crater floor (blue) to the surrounding rim (red, white)]. See 1492. [Image: P. C. Thomas]