An unassuming rock collected from the surface of the moon over 50 years ago by the Apollo 17 astronauts Gene Cernan and Harrison Schmitt could completely alter what we thought we knew about the early ...

[Apollo 17] THE EARTH ABOVE LM CHALLENGER: last seen by humans from the surface of another world (NASA's own copy, used and annotated, for the preparation of its final Apollo science report), 1972 ...

Now, a research team led by a Brown University professor has done just that. In a study published in the Journal of Geophysical Research: Planets, researchers report a sulfuric surprise in rock ...