80 citations · 176 across the 10 of their papers we have counts for
12 papers
Features in the visible spectra of the Enceladus particle plume and E ring: Potential evidence of organic materials and/or missing sub-micron particles
M. M. Hedman, S. M. MacKenzie
Visible spectra of the Enceladus particle plume and E ring contain evidence for a change in spectral slope around 0.5 micron. This feature can be seen in data obtained by both the…
Community need for an Astrobiology Sample Repository and Sample Reference Suite
A. Pontefract, C. Bradburne, K. Craft +21
As we prepare for the next planetary mission charged with finding life beyond Earth, the Astrobiology community must continue to improve its understanding of what constitutes a bio…
Towards Prebiotic Chemistry on Titan: Impact experiments on organic haze particles
Ben K. D. Pearce, Sarah M. Hörst, Christopher J. Cline +7
Impacts are critical to producing the aqueous environments necessary to stimulate prebiotic chemistry on Titan's surface. Furthermore, organic hazes resting on the surface are a li…
Science goals and new mission concepts for future exploration of Titan's atmosphere geology and habitability: Titan POlar Scout/orbitEr and In situ lake lander and DrONe explorer (POSEIDON)
Sébastien Rodriguez, Sandrine Vinatier, Daniel Cordier +61
In response to ESA Voyage 2050 announcement of opportunity, we propose an ambitious L-class mission to explore one of the most exciting bodies in the Solar System, Saturn largest m…
The science case for spacecraft exploration of the Uranian satellites: Candidate ocean worlds in an ice giant system
Richard J. Cartwright, Chloe B. Beddingfield, Tom A. Nordheim +15
The 27 satellites of Uranus are enigmatic, with dark surfaces coated by material that could be rich in organics. Voyager 2 imaged the southern hemispheres of Uranus' five largest '…
Titan: Earth-like on the Outside, Ocean World on the Inside
Shannon M. MacKenzie, Samuel P. D. Birch, Sarah Horst +30
Thanks to the Cassini-Huygens mission, Titan, the pale orange dot of Pioneer and Voyager encounters has been revealed to be a dynamic, hydrologically-shaped, organic-rich ocean wor…
Solving the Alhazen-Ptolemy Problem: Determining Specular Points on Spherical Surfaces for Radiative Transfer of Titan's Seas
William J. Miller, Jason W. Barnes, Shannon M. MacKenzie
Given a light source, a spherical reflector, and an observer, where on the surface of the sphere will the light be directly reflected to the observer, i.e. where is the the specula…
The Science Case for Spacecraft Exploration of the Uranian Satellites
Richard J. Cartwright, Chloe B. Beddingfield, Tom Nordheim +14
The five classical Uranian moons are possible ocean worlds that exhibit bizarre geologic landforms, hinting at recent surface-interior communication. However, Uranus' classical moo…
THEO Concept Mission: Testing the Habitability of Enceladus's Ocean
Shannon M. MacKenzie, Tess E. Caswell, Charity M. Phillips-Lander +17
Saturn's moon Enceladus offers a unique opportunity in the search for life and habitable environments beyond Earth, a key theme of the National Research Council's 2013-2022 Decadal…
Compositional Similarities and Distinctions between Titan's Evaporitic Terrains
Shannon MacKenzie, Jason Barnes
We document the similarities in composition between the equatorial basins Tui Regio, Hotei Regio, and other 5-m-bright materials, notably the north polar evaporites, by investig…
Structure of Titan's evaporites
D. Cordier, T. Cornet, J. W. Barnes +5
Numerous geological features that could be evaporitic in origin have been identified on the surface of Titan. Although they seem to be water-ice poor, their main properties -chemic…
Evidence of Titan's Climate History from Evaporite Distribution
Shannon M. MacKenzie, Jason W. Barnes, Christophe Sotin +8
Water-ice-poor, 5-m-bright material on Saturn's moon Titan has previously been geomorphologically identified as evaporitic. Here we present a global distribution of the occurren…