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Distribution and Energy Balance of Pluto's Nitrogen Ice, as seen by New Horizons in 2015
Briley Lewis, John Stansberry, Bryan Holler +10
Pluto's surface is geologically complex because of volatile ices that are mobile on seasonal and longer time scales. Here we analyzed New Horizons LEISA spectral data to globally m…
Upper Limits for Emissions in the Coma of Comet 67P/Churyumov-Gerasimenko Near Perihelion as Measured by Rosetta's Alice Far-Ultraviolet Spectrograph
B. A. Keeney, S. A. Stern, R. J. Vervack +13
The Alice far-UV imaging spectrograph (700-2050 A) acquired over 70,000 spectral images during Rosetta's 2-year escort mission, including over 20,000 in the months surrounding peri…
Plutos Far Side
S. A. Stern, O. L. White, P. J. McGovern +11
The New Horizons spacecraft provided near global observations of Pluto that far exceed the resolution of Earth-based data sets. Most Pluto New Horizons analysis hitherto has focuse…
Stellar Occultation by Comet 67P/Churyumov-Gerasimenko Observed with Rosetta's Alice Far-Ultraviolet Spectrograph
B. A. Keeney, S. A. Stern, P. D. Feldman +13
Following our previous detection of ubiquitous H2O and O2 absorption against the far-UV continuum of stars located near the nucleus of Comet 67P/Churyumov-Gerasimenko, we present a…
Reorientation of Sputnik Planitia implies a Subsurface Ocean on Pluto
F. Nimmo, D. P. Hamilton, W. B. McKinnon P. M. Schenk +60
The deep nitrogen-covered Sputnik Planitia (SP; informal name) basin on Pluto is located very close to the longitude of Pluto's tidal axis[1] and may be an impact feature [2], by a…
Convection in a volatile nitrogen-ice-rich layer drives Pluto's geological vigor
William B. McKinnon, Francis Nimmo, Teresa Wong +61
The vast, deep, volatile-ice-filled basin informally named Sputnik Planum is central to Pluto's geological activity[1,2]. Composed of molecular nitrogen, methane, and carbon monoxi…
Pluto's Haze as a Surface Material
W. M. Grundy, T. Bertrand, R. P. Binzel +37
Pluto's atmospheric haze settles out rapidly compared with geological timescales. It needs to be accounted for as a surface material, distinct from Pluto's icy bedrock and from the…
Formation of Charon's Red Poles From Seasonally Cold-Trapped Volatiles
W. M. Grundy, D. P. Cruikshank, G. R. Gladstone +38
A unique feature of Pluto's large satellite Charon is its dark red northern polar cap. Similar colours on Pluto's surface have been attributed to organic macromolecules produced by…
The CH4 cycles on Pluto over seasonal and astronomical timescales
T. Bertrand, F. Forget, O. M. Umurhan +13
New Horizons observations suggest that CH4 on Pluto has a complex history, involving reservoirs of different composition, thickness and stability controlled by volatile processes o…
Impact Craters on Pluto and Charon Indicate a Deficit of Small Kuiper Belt Objects
K. N. Singer, W. B. McKinnon, B. Gladman +20
The flyby of Pluto and Charon by the New Horizons spacecraft provided high-resolution images of cratered surfaces embedded in the Kuiper belt, an extensive region of bodies orbitin…
Overview of initial results from the reconnaissance flyby of a Kuiper Belt planetesimal: 2014 MU69
S. A. Stern, J. R. Spencer, H. A. Weaver +11
The centerpiece objective of the NASA New Horizons first Kuiper Extended Mission (KEM-1) was the close flyby of the Kuiper Belt Object KBO) 2014 MU69, nicknamed Ultima Thule. On 1…