In 1958 the US launched its first satellite, Explorer 1, which initiated a long legacy of satellites meant to take our understanding of Earth to new heights. In 1997, NASA launched a satellite that began a 20-year continuous global record of the very thing that makes Earth special: life. Life that makes Earth unique among the thousands of other planets we've discovered. While most satellite missions captured data on the physical characteristics of the planet's climate and weather, others allowed us to measure life itself. The result? The most complete view of global biology to date. More stunning is the visualization of the Earth's pulse - of the Earth that is breathing every single day. Watch this breathtaking time-lapse by NASA Goddard of a living, breathing Earth viewed from space.
[Source: NASA Goddard/YouTube.]