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We strive to provide complete, understandable answers to questions about cosmic and heliospheric science and to encourage all to explore the many varied facets of scientific study. But before you send us your question, there are a few things we'd like for you to know:
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Your question may be answered in hours or in weeks; for most questions, it's somewhere in-between. The time to reply depends on many factors: how many other questions we have received, the complexity of your question, and the other projects that our scientists are involved in. These are working NASA scientists, after all!
Dr. Louis Barbier is interviewed about being an astrophysicist: a typical day, his projects, the job market, etc. This interview is from questions received from one of our readers.
Dr. Eric Christian is a Research Scientist in the Heliophysics Division at NASA GSFC. He studies energetic particles in the heliosphere using instruments on the ACE, IBEX, STEREO, and Voyager spacecraft. More details on his background and scientific interests can be read in an old (2003) interview by clicking on his name.
Dr. Georgia A. de Nolfo is currently a research scientist at NASA/GSFC. Her research interests focus on the physics of high energy cosmic rays including the analysis of data from both high-altitude balloon-borne experiments such as TIGER and space-based experiments such as ACE.
Dr. J. R. Jokipii is a Regents' professor of Planetary Sciences and Astronomy at the University of Arizona, Tucson, AZ. His research interests cover the rarified gases in space, ranging from the solar atmosphere to the interstellar gas, including the energetic particles, or cosmic rays, which permeate these gases.
Dr. Richard Mewaldt is a Senior Research Associate in Physics at the California Institute of Technology. His research interests include energetic particles accelerated on the Sun, in interplanetary space, in Earth's magnetosphere and in the heliosphere, cosmic rays accelerated in our Galaxy, and space weather. He is presently a Co-Investigator on NASA's ACE and STEREO missions.
Dr. Eberhard Moebius is a professor of physics at the University of New Hampshire, teaching both physics and astronomy courses. His research interests include acceleration of ions in the Earth's magnetosphere, in interplanetary space, and in solar flares, as well as the interaction of interstellar gas with the solar wind.
Dr. Mark Popecki is a research scientist at the University of New Hampshire working on data analysis for the ACE/SEPICA instrument, and on instrument development for the STEREO project, to learn more about energetic particles from the Sun.
Dr. Charles W. (Chuck) Smith is a Senior Research Scientist at the University of New Hampshire. His research interests include the solar wind, interplanetary magnetic field, and the interaction of the solar wind with planets and particles. He is the Data Manager for the ACE/MAG instrument.
Dr. Nicholas (Nick) Sterling is a NASA Postdoctoral Fellow at NASA/GSFC. His research interests involve the study of planetary nebulae via spectroscopy. Specifically, he studies exotic elements in these objects, including selenium, bromine, krypton, and xenon, which can be produced by the low-mass stars that form planetary nebulae. He is also interested in the atomic properties of these elements, which are vital for accurately determining their abundances.
Dr. Edward F. (Ed) Tedesco is an Associate Research Professor at the University of New Hampshire. He mainly studies asteroids using observations at visual and infrared wavelengths obtained with ground- and space-based telescopes. He is currently President of the International Astronomical Union's Commission on Physical Studies of Comets and Minor Planets.
Dr. Pin Wu is a visiting research fellow at the Queen's University, Belfast, the United Kingdom. Her research interests include solar wind turbulence, magnetic reconnection, and the heliospheric termination shock.
Answers to previous cosmic and heliospheric questions
Cosmic Rays, Energetic Particles, Plasma
Earth and Moon
Planets and Moons
Studying and Exploring Space
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Last modified May 27, 2009