Mark Showalter
Senior Research Scientist
Summary
Published articles Show More
The atmosphere of Pluto as observed by New Horizons
...Published in Science
In July 2015, the New Horizons spacecraft flew through the Pluto system at high speed, humanity's first close look at this enigmatic system on the outskirts of our solar system. In a series of papers, the New Horizons team present their analysis of the encounter data downloaded so far: Moore et al. present the complex surface features and geology o...
Observing Planetary Rings and Small Satellites with the James Webb Space Telescope: Science Justification and Observatio...
...Published in Publications of the Astronomical Society of the Pacific
The James Webb Space Telescope (JWST) will provide unprecedented opportunities to observe the rings and small satellites in our Solar System, accomplishing three primary objectives:(1) discovering new rings and moons,(2) unprecedented spectroscopy, and (3) time-domain observations. We give details on these science objectives and describe requiremen...
Uranus at equinox: Cloud morphology and dynamics
As the 7 December 2007 equinox of Uranus approached, ring and atmosphere observers produced a substantial collection of observations using the 10-m Keck telescope and the Hubble Space Telescope. Those spanning the period from 7 June 2007 through 9 September 2007 we used to identify and track cloud features, determine atmospheric motions, characteri...