The launch window will open promptly at 8:30 p.m. EDT, and if everything looks good the Falcon Heavy will head into space as soon as the window opens. However, as is often the case with rocket launches, weather can delay things a bit or even push the launch back to a later date. NASA’s four payloads including a variety of new instruments and experimental technologies that could shape the future of spaceflight. NASA provides a brief summary of each: Deep Space Atomic Clock – a navigation payload hosted on General Atomics Orbital Test Bed satellite Green Propellant Infusion Mission – a small satellite that will demonstrate a non-toxic fuel and propulsion system Space Environment Testbeds – instruments hosted on the Air Force Research Lab’s Demonstration and Science Experiments spacecraft to study how to protect satellites in space Enhanced Tandem Beacon Experiment – twin CubeSats to study disruptions of signals that pass-through Earth’s upper atmosphere NASA has already scheduled the live streaming coverage of the event, which is slated to begin a half hour before the launch window opens. The launch and all associated coverage will be available live on NASA’s YouTube channel as well as SpaceX’s channel. Tech. Entertainment. Science. Your inbox. Sign up for the most interesting tech & entertainment news out there. Email: