On Dec. 2, 1995, NASA and the European Space Agency launched the Solar and Heliospheric Observatory (SOHO) into orbit, hoping to study the sun "from the inside out." The spacecraft now sits in the sun-Earth L1 Lagrange point, about 932,000 miles (1.5 million km) closer to the sun than Earth, giving it an almost interrupted view of our home star, as this composite image of snapshots from throughout its three decades shows.
