Explanipedia

Countdown to Apophis close approach—Cascading hazards from asteroid impacts Open

T. N. Titus, L. M. Pigue, Lucienne Morton · 2025

U.S. Geological Survey 2024 Rocky Mountain Region Science Exchange—Showcasing cutting-edge science to adapt to extreme weather events and stakeholder needs Open

William Andrews, T. N. Titus, Lauren Ellissa Eng, Kristine Zellman, Patrick J. Anderson , et al. · 2025

Comparative Analysis of Medical School and Physician Assistant Education and the Use of Provisional Licenses Open

Manu Easow Mathew, Samantha O’Connor, T. N. Titus · 2024

A comparison of CO2 seasonal activity in Mars' northern and southern hemispheres Open

C. J. Hansen, Shane Byrne, W. M. Calvin, S. Diniega, C. M. Dundas , et al. · 2023

The Nitty-Gritty Forces That Shape Planetary Surfaces Open

Brian Jackson, S. Diniega, T. N. Titus, Alejandro Soto, E. G. Rivera‐Valentín · 2023

Scientists are coming up with ingenious ways to compare terrestrial sand dunes, dust storms, and rain with their counterparts on Mars and Titan.

A review of common natural disasters as analogs for asteroid impact effects and cascading hazards Open

T. N. Titus, Darrel Robertson, Joel B. Sankey, Larry G. Mastin, Francis K. Rengers · 2023

Modern civilization has no collective experience with possible wide-ranging effects from a medium-sized asteroid impactor. Currently, modeling efforts that predict initial effects from a meteor impact or airburst provide needed information…

U.S. Geological Survey Rocky Mountain Region 2022 science exchange, showcasing interdisciplinary and state-of-the-art USGS science Open

D. E. Peterson, Katherine L. French, Jeannette H. Oden, Patrick J. Anderson, T. N. Titus , et al. · 2023

First posted June 28, 2023 For additional information, contact: Director, Region 7 - Upper Colorado BasinU.S. Geological SurveyBox 25046, MS-911Denver, CO 80225-0046 The Rocky Mountains and the Colorado River Basin in the Western United St…

Planetary Caves: A Solar System View of Processes and Products Open

J. Judson Wynne, John E. Mylroie, T. N. Titus, Michael J. Malaska, D. L. Buczkowski , et al. · 2022

We provide the first solar system wide compendium of speleogenic processes and products. An examination of 15 solar system bodies revealed that six cave‐forming processes occur beyond Earth including volcanic (cryo and magmatic), fracturin…

Fundamental Science and Engineering Questions in Planetary Cave Exploration Open

J. Judson Wynne, T. N. Titus, Ali‐akbar Agha‐mohammadi, Armando Azua‐Bustos, Penelope J. Boston , et al. · 2022

Nearly half a century ago, two papers postulated the likelihood of lunar lava tube caves using mathematical models. Today, armed with an array of orbiting and fly‐by satellites and survey instrumentation, we have now acquired cave data acr…

Concepts for the Future Exploration of Dwarf Planet Ceres’ Habitability Open

Julie Castillo‐Rogez, John Brophy, Kelly E. Miller, Michael M. Sori, J. E. C. Scully , et al. · 2022

Dwarf planet Ceres is a compelling target for future exploration because it hosts at least regional brine reservoirs and potentially ongoing geological activity. As the most water-rich body in the inner solar system, it is a representative…

Planetary Aeolian Landforms: An Introduction to the Fifth Planetary Dunes Workshop Special Issue Open

S. Silvestro, T. N. Titus · 2022

Aeolian landforms are widespread in our solar system. Understanding the exact nature and process of formation of these features are challenging tasks implying a strong collaboration between scientists with different skills and scientific b…

Using near–surface temperature data to vicariously calibrate high-resolution thermal infrared imagery and estimate physical surface properties Open

T. N. Titus, J. Judson Wynne, M Jhabvala, Nathalie A. Cabrol · 2022

Thermal response of the surface to solar insolation is a function of the topography and the thermal physical characteristics of the landscape, which include bulk density, heat capacity, thermal conductivity and surface albedo and emissivit…

Past, Present, and Future of Mars Polar Science: Outcomes and Outlook from the 7th International Conference on Mars Polar Science and Exploration Open

P. Becerra, I. B. Smith, Shannon M. Hibbard, Chimira Andres, J. Bapst , et al. · 2021

Mars Polar Science is a subfield of Mars science that encompasses all studies of the cryosphere of Mars and its interaction with the Martian environment. Every 4 yr, the community of scientists dedicated to this subfield meets to discuss n…

Advancing Cave Detection Using Terrain Analysis and Thermal Imagery Open

J. Judson Wynne, Jeff Jenness, Derek L. Sonderegger, T. N. Titus, M Jhabvala , et al. · 2021

Since the initial experiments nearly 50 years ago, techniques for detecting caves using airborne and spacecraft acquired thermal imagery have improved markedly. These advances are largely due to a combination of higher instrument sensitivi…

A roadmap for planetary caves science and exploration Open

T. N. Titus, J. Judson Wynne, Michael J. Malaska, Ali‐akbar Agha‐mohammadi, P. B. Buhler , et al. · 2021

Mars Astrobiological Cave and Internal habitability Explorer (MACIE): A\n New Frontiers Mission Concept Open

C. M. Phillips-Lander, Ali Aghamohammadi, J. Judson Wynne, T. N. Titus, N. J. Chanover , et al. · 2021

Martian subsurface habitability and astrobiology can be evaluated via a lava\ntube cave, without drilling. MACIE addresses two key goals of the Decadal\nSurvey (2013-2022) and three MEPAG goals. New advances in robotic\narchitectures, auto…

Mars Astrobiological Cave and Internal habitability Explorer (MACIE): A New Frontiers Mission Concept Open

C. M. Phillips-Lander, Ali Aghamohammadi, J. Judson Wynne, T. N. Titus, N. J. Chanover , et al. · 2021

Martian subsurface habitability and astrobiology can be evaluated via a lava tube cave, without drilling. MACIE addresses two key goals of the Decadal Survey (2013-2022) and three MEPAG goals. New advances in robotic architectures, autonom…

Aeolian Processes and Landforms Across the Solar System: Science and Technology Requirements for the Next Decade Open

T. N. Titus, S. Diniega, L. K. Fenton, L. D. V. Neakrase, Jaap H. Nienhuis , et al. · 2021

Aeolian processes and phenomena have sculpted landscapes and influenced planetary climate states across the Solar System, including planetary bodies with transient atmospheres. This white paper highlights the need for a planetary aeolian g…

Solar-System-Wide Significance of Mars Polar Science Open

I. B. Smith, W. M. Calvin, David E. Smith, C. J. Hansen, S. Diniega , et al. · 2021

Mars Polar Science is an integrated, compelling system that serves as a nearby analogue to numerous other planets, supports human exploration, and habitability. Mars possesses the closest and most easily accessible layered ice deposits out…

Unlocking the Climate Record Stored within Mars’ Polar Layered Deposits Open

I. B. Smith, P. O. Hayne, S. Byrne, P. Becerra, M. A. Kahre , et al. · 2021

In the icy beds of its polar layered deposits (PLD), Mars likely possesses a record of its recent climate history, analogous to terrestrial ice sheets that contain records of Earth's past climate. Both northern and southern PLDs store info…

Mars Astrobiological Cave and Internal habitability Explorer (MACIE): A New Frontiers Mission Concept Open

C. M. Phillips-Lander, A. Agha-mohamamdi, J. Judson Wynne, T. N. Titus, N. J. Chanover , et al. · 2021

Martian subsurface habitability and astrobiology

The Atmospheric eXploration and Investigative Synergy (AXIS) Group: proposal for a new interdisciplinary NASA Assessment/Analysis Group (AG) Open

Kevin McGouldrick, A. Kleinboehl, Josette Bellan, N. R. Izenberg, J. L. Whitten , et al. · 2021

Whitepaper #433 submitted to the Planetary Science and Astrobiology Decadal Survey 2023-2032. Topics: atmospheric/exospheric evolution; other: Infrastructure; other planetary bodies: Terrestrial planets in the Solar System and Beyond

A Critical Gap: In situ Measurements of Planetary Surface-Atmosphere Interactions Beyond Earth Open

S. Diniega, D. M. Burr, C. M. Dundas, Brian Jackson, M. A. Mischna , et al. · 2021

White Paper Summary of the Final Report from the Ice and Climate Evolution Science Analysis group (ICE-SAG) Open

S. Diniega, Than Putzig, Shane Byrne, W. M. Calvin, C. M. Dundas , et al. · 2021

Airborne Dust Plumes Lofted by Dislodged Ice Blocks at Russell Crater, Mars Open

C. L. Dinwiddie, T. N. Titus · 2021

Linear dune gullies on poleward‐facing Martian slopes are enigmatic. Formation by CO 2 ‐ice block or snow cornice falls has been proposed based on optical imagery of bright, high‐albedo features inside gully channels. Because these feature…

Modern Mars' geomorphological activity, driven by wind, frost, and gravity Open

S. Diniega, A. M. Bramson, B. J. Buratti, P. B. Buhler, D. M. Burr , et al. · 2021

Planetary Cave Exploration Progresses Open

T. N. Titus, C. M. Phillips-Lander, Penelope J. Boston, J. Judson Wynne, L. Kerber · 2020

Terrestrial caves offer scientific and engineering insights and serve as testing grounds for future forays by humans and robots into caves on other worlds.

SPY ROBOT FOR SURVEILLANCE USING RASPBERRY PI CONTROLLER . Open

T. N. Titus, D Arulkiruthiga, N Dharshini, R. Jeyanthi, Michella Monica · 2020

Nowadays robot plays a vital role in our day to day life, thus reducing human activities. The main function of Spy robot is to roam around high sensitive region and provide video information from the required environment to the remote moni…

FEATURES OF THE FUNCTIONING OF THE BRICS GROUP AS AN INFORMAL INTERNATIONAL ASSOCIATION Open

N. Sekongo, V.E. Antonov, T. N. Titus · 2019

The article examines some indicators that characterize the role of BRICS in the global economic system. It is shown that in the modern global world these countries have many common features. Particular attention is paid to the prospects fo…

Planetary Dune Workshop Expands to Include Subaqueous Processes Open

T. N. Titus, David M. Rubin, Gerald Bryant · 2018

The Fifth International Planetary Dunes Workshop: From the Bottom of the Oceans to the Outer Limits of the Solar System; St. George, Utah, 16–19 May 2017

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