Advances in Proton Therapy, Pencil Beam Technology Reach Patient Care

submitted by: mdanderson

In treating cancer, the pencil beam technology for proton therapy delivers a single, narrow proton beam (about a centimeter in diameter) that is magnetically swept across the tumor, depositing the radiation dose like a painter

Magellan's Venus

submitted by: scivee-team

Images from NASA spacecraft, Magellan, reveal Venus' topography and geological features.Astronomers remember Magellan's astounding photos of Venus.