image: This image shows X-ray elemental maps of the chondrites Hammadah al Hamra 237 and Isheyevo. This material relates to a paper that appeared in the most recent issue of Science Advances, published by AAAS. The paper, by B.C. Johnson at Brown University in Providence, RI, and colleagues was titled, "Timing of the formation and migration of giant planets as constrained by CB chondrites." view more
Credit: Alexander Krot (Hawai'i Institute of Geophysics and Planetology,University of Hawai'i at Mānoa)