Particle Acceleration Processes

CAPE CANAVERAL, Fla. – Weather conditions associated with lightning, as well as cumulus and anvil clouds, kept NASA's Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral Air Force More

CAPE CANAVERAL, Fla. – NASA Launch Services Program officials oversee the countdown of NASA's Radiation Belt Storm Probes, or RBSP, and its United Launch Alliance Atlas V rocket from consoles in the Atlas V Spa More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, United Launch Alliance, or ULA, technicians monitor the progress as the ULA Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probe More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is moved into the Vertical In More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – An unfavorable weather forecast as a result of Tropical Storm Isaac approaching Florida kept NASA's twin Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, United Launch Alliance, or ULA, technicians monitor the progress as the ULA Atlas V rocket with NASA’s twin Radiation Belt Storm Probes, or More

CAPE CANAVERAL, Fla. – An unfavorable weather forecast as a result of Tropical Storm Isaac approaching Florida kept NASA's twin Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral More

CAPE CANAVERAL, Fla. – An unfavorable weather forecast as a result of Tropical Storm Isaac approaching Florida kept NASA's twin Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral More

CAPE CANAVERAL, Fla. – An unfavorable weather forecast as a result of Tropical Storm Isaac approaching Florida kept NASA's twin Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – An unfavorable weather forecast as a result of Tropical Storm Isaac approaching Florida kept NASA's twin Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, United Launch Alliance, or ULA, technicians prepare the ULA Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, for More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, United Launch Alliance, or ULA, technicians monitor the progress as the ULA Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probe More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket with NASA’s twin Radiation Belt Storm Probes, or RBSP, rolls back to the Vertical Integr More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket with NASA’s twin Radiation Belt Storm Probes, or RBSP, rolls back to the Vertical Integr More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – A view from above shows the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, inside the Vertical Integration Facility after rolling back f More

CAPE CANAVERAL, Fla. – An unfavorable weather forecast as a result of Tropical Storm Isaac approaching Florida kept NASA's twin Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral More

CAPE CANAVERAL, Fla. – An unfavorable weather forecast as a result of Tropical Storm Isaac approaching Florida kept NASA's twin Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral More

CAPE CANAVERAL, Fla. – An unfavorable weather forecast as a result of Tropical Storm Isaac approaching Florida kept NASA's twin Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, United Launch Alliance, or ULA, technicians monitor the progress as the ULA Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probe More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket with NASA’s twin Radiation Belt Storm Probes, or RBSP, rolls back to the Vertical Integr More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket with NASA’s twin Radiation Belt Storm Probes, or RBSP, rolls back to the Vertical Integr More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, United Launch Alliance, or ULA, technicians monitor the progress as the Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or More

CAPE CANAVERAL, Fla. – An unfavorable weather forecast as a result of Tropical Storm Isaac approaching Florida kept NASA's twin Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, United Launch Alliance, or ULA, technicians monitor the progress as the ULA Atlas V rocket with NASA’s twin Radiation Belt Storm Probes, or More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – An unfavorable weather forecast as a result of Tropical Storm Isaac approaching Florida kept NASA's twin Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral More

CAPE CANAVERAL, Fla. – An unfavorable weather forecast as a result of Tropical Storm Isaac approaching Florida kept NASA's twin Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – An unfavorable weather forecast as a result of Tropical Storm Isaac approaching Florida kept NASA's twin Radiation Belt Storm Probes, or RBSP, on Space Launch Complex 41 at Cape Canaveral More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance Atlas V rocket, carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is rolled back from Space Launch Comp More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, heads to the launch pad after More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – A view from above inside the United Launch Alliance, or ULA, Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, reveals the ULA Atlas More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, United Launch Alliance, or ULA, workers monitor the progress as a ULA Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or R More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, began rolling out of the ULA More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, began rolling out of the ULA More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is inside the ULA Vertical In More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, began rolling out of the ULA More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, is inside the ULA Vertical In More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – At Cape Canaveral Air Force Station in Florida, the United Launch Alliance, or ULA, Atlas V rocket carrying NASA’s twin Radiation Belt Storm Probes, or RBSP, rolled out of the ULA Vertica More

CAPE CANAVERAL, Fla. – Illuminated with a blue hue from bright xenon lights, the United Launch Alliance Atlas V rocket carrying NASA’s Radiation Belt Storm Probes, or RBSP, spacecraft lifts off Space Launch Com More

CAPE CANAVERAL, Fla. – Illuminated with a blue hue from bright xenon lights, the United Launch Alliance Atlas V rocket carrying NASA’s Radiation Belt Storm Probes, or RBSP, spacecraft lifts off Space Launch Com More

CAPE CANAVERAL, Fla. – The United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, lifts off Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida at 4:05 a. More

CAPE CANAVERAL, Fla. – The United Launch Alliance Atlas V rocket carrying NASA’s Radiation Belt Storm Probes, or RBSP, spacecraft creates a halo of light at Space Launch Complex 41 on Cape Canaveral Air Force S More

CAPE CANAVERAL, Fla. – The United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, is a breath away from lifting off Space Launch Complex 41 on Cape Canaveral Air Force Stati More

CAPE CANAVERAL, Fla. – The engines ignite under the United Launch Alliance Atlas V rocket at 4:05 a.m. EDT lifting NASA's Radiation Belt Storm Probes, or RBSP, off Space Launch Complex 41 on Cape Canaveral Air More

CAPE CANAVERAL, Fla. - With its engines burning bright against the late night sky, the United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, travels upward after lifting of More

CAPE CANAVERAL, Fla. – Spotlights bounce off the clouds over Space Launch Complex 41 on Cape Canaveral Air Force Station as NASA's Radiation Belt Storm Probes, or RBSP, lift off the pad at 4:05 a.m. EDT aboard More

CAPE CANAVERAL, Fla. - The United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, lifts off Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida at 4:05 a. More

CAPE CANAVERAL, Fla. – Spotlights bounce off the clouds over Space Launch Complex 41 on Cape Canaveral Air Force Station as NASA's Radiation Belt Storm Probes, or RBSP, lift off the pad at 4:05 a.m. EDT aboard More

CAPE CANAVERAL, Fla. – Engine ignition under the United Launch Alliance Atlas V rocket at 4:05 a.m. EDT signals liftoff of NASA's Radiation Belt Storm Probes, or RBSP, is imminent from Space Launch Complex 41 o More

CAPE CANAVERAL, Fla. – The engines ignite under the United Launch Alliance Atlas V rocket at 4:05 a.m. EDT lifting NASA's Radiation Belt Storm Probes, or RBSP, off Space Launch Complex 41 on Cape Canaveral Air More

CAPE CANAVERAL, Fla. – The United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, lifts off Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida at 4:05 a. More

CAPE CANAVERAL, Fla. - With its engines burning bright against the late night sky, the United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, travels upward after lifting of More

CAPE CANAVERAL, Fla. - The United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, lifted off Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida at 4:05 a More

CAPE CANAVERAL, Fla. - The United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, lifts off Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida at 4:05 a. More

CAPE CANAVERAL, Fla. - The engines ignite under the United Launch Alliance Atlas V rocket at 4:05 a.m. EDT lifting NASA's Radiation Belt Storm Probes, or RBSP, off Space Launch Complex 41 on Cape Canaveral Air More

CAPE CANAVERAL, Fla. – The engines ignite under the United Launch Alliance Atlas V rocket at 4:05 a.m. EDT lifting NASA's Radiation Belt Storm Probes, or RBSP, off Space Launch Complex 41 on Cape Canaveral Air More

CAPE CANAVERAL, Fla. - The United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, lifts off Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida at 4:05 a. More

CAPE CANAVERAL, Fla. – The United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, lifts off Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida at 4:05 a. More

CAPE CANAVERAL, Fla. – The United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, lifts off Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida at 4:05 a. More

CAPE CANAVERAL, Fla. - With its engines burning bright against the late night sky, the United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, travels upward after lifting of More

CAPE CANAVERAL, Fla. - The engines ignite under the United Launch Alliance Atlas V rocket at 4:05 a.m. EDT lifting NASA's Radiation Belt Storm Probes, or RBSP, off Space Launch Complex 41 on Cape Canaveral Air More

CAPE CANAVERAL, Fla. - With its engines burning bright against the late night sky, the United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, travels upward after lifting of More

CAPE CANAVERAL, Fla. - The United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, lifted off Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida at 4:05 a More

CAPE CANAVERAL, Fla. – The United Launch Alliance Atlas V rocket carrying NASA's Radiation Belt Storm Probes, or RBSP, lifts off Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida at 4:05 a. More

CAPE CANAVERAL, Fla. – Michael Luther, deputy associate administrator of NASA's Science Mission Directorate? at NASA Headquarters, participates in a Radiation Belt Storm Probes, or RBSP, postlaunch news confere More