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The methane distribution and polar brightening on Uranus based on HST/STIS, Keck/NIRC2, and IRTF/SpeX observations through 2015
Lawrence A. Sromovsky, Erich Karkoschka, Patrick M. Fry +2
HST/STIS observations of Uranus in 2015 show that the depletion of upper tropospheric methane has been relatively stable and that the polar region has been brightening over time as…
Bouncing on Titan: Motion of the Huygens Probe in the Seconds After Landing
Stefan E. Schröder, Erich Karkoschka, Ralph D. Lorenz
While landing on Titan, several instruments onboard Huygens acquired measurements that indicate the probe did not immediately come to rest. Detailed knowledge of the probe's motion…
Methane depletion in both polar regions of Uranus inferred from HST/STIS and Keck/NIRC2 observations
Lawrence Sromovsky, Erich Karkoschka, Patrick Fry +3
From STIS observations of Uranus in 2012, we found that the methane volume mixing ratio declined from about 4% at low latitudes to about 2% at 60 deg N and beyond. This is similar…