Cloud And Land Elevation Satellite-2

NASA is set to launch its Ice, Cloud and land Elevation Satellite-2, or ICESat-2 - that will track Earth's melting poles and disappearing sea ice - on Saturday.

NASA scientists have developed a stopwatch timer that can measure within a fraction of a billionth of a second, an advance that can help record precise height measurements of sea ice, glaciers, forests and the rest of the Earth's surfaces.

NASA is set to launch its Ice, Cloud and land Elevation Satellite-2, or ICESat-2 - that will track Earth's melting poles and disappearing sea ice - on Saturday.

NASA scientists have developed a stopwatch timer that can measure within a fraction of a billionth of a second, an advance that can help record precise height measurements of sea ice, glaciers, forests and the rest of the Earth's surfaces.