November 2014

Vesta is one of the largest asteroids in the solar system. Comprising 9% of the mass of the asteroid belt, it is the second largest after the dwarf planet Ceres. And now, thanks to data obtained by NASA's Dawn spacecraft, Vesta's surface…

In this detail of the new geological map of Vesta, the brown represents the oldest and most cratered surface. Purple and light blue represent terrain modified by Veneneia and Rheasilvia impacts, respectively. The light purples and dark…

Miners were mining eastern Alaska for gold even before the thousands of fortune hunters rushed north to the nearby Klondike Goldfields in Canada's Yukon Territory.But more than a century later, no one is entirely sure of the precise…