Journal of Geophysical Research: Planets
Stardust Encounters Comet 81P/Wild 2
Stardust successfully encountered comet 81P/Wild 2 on 2 January 2004 at a distance of 236.4 ÃÂ± 1 km. All encounter investigations acquired valuable new and surprising findings. The time-of-flight spectrometer registered 29 spectra during flyby and measured the first negative ion mass spectra of cometary particles.