The Solar Sentinels was a proposed space mission to Sun. Solar Sentinels was proposed in 2006 in conjunction with other Sun missions, and a Solar Sentinels lite was proposed in 2008. It might have studied the Sun during its solar maximum, the last before the beginning of the Orion program.}} Six spacecraft will be launched, which will separate into three groups. The Solar Sentinels are part of the NASA program Living With a Star.