Timeline for the Mars Reconnaissance Orbiter (MRO) lists the significant events of the launch, aerobraking, and transition phases as well as subsequent significant operational mission events; by date and brief description. Launch and cruise timeline April 30, 2005: the MRO spacecraft was delivered to the launch site. August 9, 2005: the August 10 launch opportunity was postponed because of reliability concerns over the Atlas V's gyroscopes. August 10, 2005: concerns over the gyroscopes were resolved. Launch was scheduled for 7:50 am EST, August 11. August 11, 2005: concerns over weather cause a rescheduling of the launch to 9:00 am EST. Conflicting sensor readings during fueling of the Centaur stage's liquid hydrogen fuel tank could not be corrected in time, causing the launch to be scrubbed and rescheduled for 7:43 am EST August 12. August 12, 2005: at 7:43 am EST, MRO was launched. There were no significant anomalies reported during launch and deployment into interplanetary transfer orbit. August 15, 2005: MARCI was tested and calibrated. August 25, 2005: at 15:19:32 UTC, MRO was 100 million kilometers from Mars. August 27, 2005: the first trajectory correction maneuver was executed. The burn used the same main thrusters that are needed for the orbital insertion maneuver and lasted 15 seconds. A velocity change of 7.8 m/s was achieved. September 8, 2005: MRO completed calibration and testing of the HiRISE and CTX cameras by taking pictures of the Moon from 10 million kilometers away. November 18, 2005: MRO underwent its second scheduled course correction by firing its 6 medium thrusters for 20 seconds and changing its velocity by 75 cm/s. January 29, 2006: at 06:59:24 UTC, MRO was 10 million kilometers from Mars. February 3, 2006: MRO began the Approach Phase, in preparation for orbital insertion. Orbital insertion/ Aerobraking timeline March 10, 2006: MRO successfully completed orbital insertion. March 23, 2006: test images from three of MROs cameras were taken. HiRISE images were taken over the course of two orbits, the first returned from a height of 2500 km (at about ten times poorer resolution than when the camera is in its final orbit). The CTX and MARCI cameras also took test images. March 30, 2006: MRO fired its intermediate thrusters for 58 seconds and dropped its periapsis by 94 km, in preparation to begin aerobraking. April 7, 2006: MRO begins a five-month-long Aerobraking Stage to reduce its highly elliptical orbit to a circular,