After a 17-year back story that involved politics and agency peacemaking, the Deep Space Climate Observatory, or DSCOVR, has now begun a million-mile journey that will take it to a place where the gravitational forces between the sun and Earth are balanced.
Riding a SpaceX Falcon rocket, DSCOVR took off at 6:03 p.m. EST Wednesday from Cape Canaveral, Florida.
This launch is important for Southern California-based SpaceX because it is its first deep-space launch. And it's fascinating because the project emerged from an idea proposed by Al Gore in 1998.
As NPR's Joe Palca explained, Gore had been fascinated by the stunning pictures of Earth from space, and he wondered if the U.S. could launch a satellite that would beam pictures of the Earth on a daily basis.
Politics became involved as the White House shifted parties and the satellite was thrown into a hangar.