Contact: Steve Koppes
University of Chicago
Caption: Priscilla Frisch, Senior Scientist in Astronomy and Astrophysics, and member of the science team, Interstellar Boundary Explorer. Collaborating with former University of Chicago astronomer Thomas F. Adams, she made the first spectrum of interstellar hydrogen inside the heliosphere using data from the Copernicus satellite in 1975. Hydrogen and helium gas dominate interstellar space beyond the heliosphere. The spectrum showed that the hydrogen had the velocity expected of interstellar gas, proving its origin.
Credit: Jason Smith
Usage Restrictions: News organizations may use this image in connection with news reports about the work Priscilla Frisch and her IBEX colleagues.
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