ScienceCuriosity roves onward after canceled attempt at drilling on unstable rock Mars mission controllers decide against drilling of rock considered as science target for Curiosity rover. In preliminary test the rock showed signs of being unstable, they say.by Jim Algar
SciencePossible discovery of exomoon circling alien planet reveals how little we know about the universeby Jim Algar
ScienceNASA says new satellite will measure CO2 emission levels, help humans deal with climate changeby Jim Algar