NASA satellite launched to measure Earth's ice changes

VANDENBERG AIR FORCE BASE, Calif. — A NASA satellite designed to precisely measure changes in Earths ice sheets, glaciers, sea ice, and vegetation was launched into polar orbit from California early Saturday.A Delta 2 rocket carrying ICESat-2 lifted off from Vandenberg Air Force Base at 6:02 a.m. and headed over the Pacific Ocean.NASA Earth Science Division director Michael Freilich says that the mission, in particular, will advance knowledge of how the ice sheets of Greenland and Antarcti