Spaceflight Now + Subscribe to Spaceflight Now Plus for access to our extensive video collections! How do I sign up? Video archive Phoenix update Scientists report on the progress of the Phoenix lander exploring the northern plains of Mars during this Sept. 29 update.  Play Two shuttles sighted Stunning aerial views of shuttles Atlantis and Endeavour perched atop launch pads 39A and 39B on Sept. 20.  Play | Hi-Def Endeavour to pad 39B Space shuttle Endeavour made the journey from Kennedy Space Center to pad 39B in the predawn hours of Sept. 19.  Play | Hi-Def MAVEN to Mars NASA has selected the Mars Atmosphere and Volatile Evolution spacecraft, or MAVEN, for launch to the Red Planet.  Play Become a subscriber More video		BY JUSTIN RAY Follow the countdown and launch of the Orbital Sciences Pegasus rocket with NASA's IBEX spacecraft. Reload this page for updates.