According to Spaceflight Now, the CYGNSS launch that was supposed to occur tomorrow, is now scheduled to take place on December 12. This is the second revised date for this launch.
|Pegasus launch © NASA|
The payload will be put in orbit using the Pegasus XL rocket which is carried and released from an airborne L-1011 at approximately 40.000', eliminating the need of a stage booster.
Spaceflight Now: Launch Schedule