Large changes in Pluto's atmosphere as revealed by recent stellar occultations

B. Sicardy, T. Widemann, E. Lellouch, C. Veillet, J. -C. Cuillandre, F. Colas, F. Roques, W. Beisker, M. Kretlow, A. -M. Lagrange, E. Gendron, F. Lacombe, J. Lecacheux, C. Birnbaum, A. Fienga, C. Leyrat, A. Maury, E. Raynaud, S. Renner, M. SchultheisK. Brooks, A. Delsanti, O. R. Hainaut, R. Gilmozzi, C. Lidman, J. Spyromilio, M. Rapaport, P. Rosenzweig, O. Naranjo, L. Porras, F. Díaz, H. Calderón, S. Carrillo, A. Carvajal, E. Recalde, L. Gaviria Cavero, C. Montalvo, D. Barría, R. Campos, R. Duffard, H. Levato

Research output: Contribution to journalArticlepeer-review

97 Citations (Scopus)

Abstract

Pluto's tenuous nitrogen atmosphere was first detected by the imprint left on the light curve of a star that was occulted by the planet in 1985 (ref. 1), and studied more extensively during a second occultation event in 1988 (refs 2-6). These events are, however, quite rare and Pluto's atmosphere remains poorly understood, as in particular the planet has not yet been visited by a spacecraft. Here we report data from the first occultations by Pluto since 1988. We find that, during the intervening 14 years, there seems to have been a doubling of the atmospheric pressure, a probable seasonal effect on Pluto.
Original languageEnglish
Pages (from-to)168-170
Number of pages3
JournalNature
Volume424
DOIs
Publication statusPublished - 1 Jul 2003

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