• Artist concept of lightning on Venus

    Venus, a Planetary Portrait of Inner Beauty

    05.31.12 - A Venus transit across the face of the sun is a relatively rare event -- occurring in pairs with more than a century separating each pair.

  • An artist's concept of the shower of particles produced when Earth's atmosphere is struck by ultra-high-energy cosmic rays.

    Solar Particles Infiltrating the Atmosphere

    05.31.12 - An M-class flare on May 17, 2012 shot out a burst of solar particles traveling at nearly the speed of light. When they collided with atoms in Earth's atmosphere they caused a ground level enhancement.

  • This image product was specially processed to enhance the individual jets that compose the moon Enceladus's plume.

    Enceladus Plume is a New Kind of Plasma Laboratory

    05.31.12 - Recent findings from NASA's Cassini mission reveal that Saturn's geyser moon Enceladus provides a special laboratory for watching unusual behavior of plasma, or hot ionized gas.

  • TRACE image of Venus (black dot) during 2004 transit.

    SDO to Observe Venus Transit

    06.01.12 - NASA's Solar Dynamics Observatory (SDO) will be watching the June 5, 2012 Venus Transit to help calibrate its instruments as well as to learn more about Venus's atmosphere.

  • Several BARREL payloads are built all at the same time.

    Building 45 Payloads for Balloon Mission

    05.29.12 - Dartmouth scientists are building 45 payloads--each destined for a trip on a balloon around Antarctica as part of NASA'S BARREL mission.

  • View of moon transiting Sun from STEREO-B spacecraft

    Electric Moon Jolts the Solar Wind

    05.30.12 - Spacecraft and computer simulations reveal the moon's extensive but invisible influence.