Science Jan 01 These tiny satellites, equipped with ion thrusters, could change how we explore space By Nsikan Akpan
Science Mar 06 Watch 4:08 What two discoveries suggest about life in the solar system Science correspondent Miles O’Brien joins Judy Woodruff to discuss two space stories that center around the search for life and how it began. NASA’s Dawn spacecraft arrived in orbit around the dwarf planet Ceres, which scientists believe shows signs of… By PBS News Hour