Reflight
Three days after the failed February 2009 launch, the OCO science team sent NASA headquarters a proposal to build and launch an OCO "carbon copy", which planned to have the replacement satellite launched by late 2011. On February 1, 2010, the FY 2010 NASA budget request did include US$170 million for NASA to develop and fly a replacement for the Orbiting Carbon Observatory.
On June 22, 2010, NASA selected Orbital Sciences for OCO 2 to launch in February 2013 on a Taurus XL 3110 from Vandenberg Air Force Base in California. However, during February 2012 both NASA and Orbital Sciences came to a agreement to terminate the launch contract, delaying the launch until at least 2014. NASA has decided to try to launch OCO 2 on another vehicle. Possibilities include the Pegasus XL, Falcon 9, Delta II and Atlas V.
On July 16, 2012, NASA announced that Orbiting Carbon Observatory 2 will fly on a Delta II in 2014.
Read more about this topic: Orbiting Carbon Observatory