Falcon 9 and Dragon undergoing preparation in Florida in      advance of April 13 launch to the International Space Station      on the CRS-6 mission. Credit: SpaceX    
    The clock is ticking towards the next launch of a SpaceX cargo    vessel to     the International Space Station (ISS) hauling critical    supplies to the six astronauts and cosmonauts serving aboard,    that now includes the     first ever One-Year Missionstation crew comprising NASAs    Scott Kelly and Russias Mikhail Kornienko.  
    The mission, dubbed SpaceX CRS-6 (Commercial Resupply    Services-6) will also feature the next daring attempt by SpaceX    to recover the Falcon 9 booster rocket through a precision    guided soft landing onto an ocean-going barge.   
        SpaceX and NASA are now targeting blastoff of the Falcon 9    rocket and     Dragon spacecraft for Monday, April 13, just over a week    from now, at approximately 4:33 p.m. EDT from Space Launch    Complex 40 at Cape Canaveral Air Force Station in Florida.  
    NASA Television plans live launch coverage starting at 3:30    p.m.  
    The launch window is instantaneous, meaning that the rocket    must liftoff at the precisely appointed time. And delays due to    weather or technical factors will force a scrub.  
    The backup launch day in case of a 24 hour scrub is Tuesday,    April 14, at approximately 4:10 p.m.  
    Falcon 9 launches have been delayed due to issues with the    rockets helium bottles that required investigation.  
      A SpaceX Falcon 9 rocket and Dragon cargo ship are set to      liftoff on a resupply mission to the International Space      Station (ISS) from launch pad 40 at Cape Canaveral, Florida.      File photo. Credit: Ken Kremer  kenkremer.com    
    The Falcon 9 first stage is outfitted with four landing legs    and grid fins to enable the landing attempt, which is a    secondary objective of SpaceX. Cargo delivery     to the station is the overriding primary objective and the    entire reason for the mission.  
Read more from the original source:
SpaceX Resets CRS-6 Space Station Launch to April 13 with Booster Landing Attempt