mei 092013
 
White Dwarfs "polluted" with Planetary Debris

  The NASA/ESA Hubble Space Telescope has found signs of Earth-like planets in an unlikely place: the atmospheres of a pair of burnt-out stars in a nearby star cluster. The white dwarf stars are being polluted by debris from asteroid-like objects falling onto them. This discovery suggests that rocky planet formation is common in clusters, [continue reading]

aug 172012
 
Magnesium Plays an Important Role in Planet Formation

  An international team, led by EXOEarths researchers of the Centro de Astrofísica da Universidade do Porto (CAUP), proposes that metals like Magnesium might have an important role in the formation of low mass planets. A swirling disk of planet-building dust. Image Credit: NASA/JPL-Caltech/T. Pyle (SSC) The team, lead by CAUP researcher Vardan Zh. Adibekyan, [continue reading]