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A. Riess (STScI), PANS Collaboration
Type Ia supernovae (SNe~Ia) provide the only direct evidence for an accelerating universe and the existence of dark energy, a result we first demonstrated with a sample at z~0.5. We are in the third year of the first space-based search and follow-up campaign to find SNe Ia at z>1 using ACS and NICMOS to further explore the kinematics of the expanding Universe and to characterize the nature of dark energy
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Bulletin of the American Astronomical Society, 37 #2
© 2005. The American Astronomical Soceity.