NASA To Hold Briefing To Discuss New Findings About Planet Mercury

WASHINGTON -- NASA will host a media teleconference on Thursday, April 30, at 2 p.m. EDT to discuss new data and findings revealed by the Mercury Surface, Space Environment, Geochemistry, and Ranging spacecraft known as MESSENGER.The spacecraft is the first mission designed to orbit the planet closest to the sun. The probe flew past Mercury on Jan. 14, 2008, and Oct. 6, 2008,