ExoMars

ExoMars
source
Name	ExoMars
Mission type	Planetary exploration
Operator	European Space Agency / Roscosmos
Manufacturers	Airbus Defence and Space / Thales Alenia Space
Launch mass	1,200 kg (orbiter+lander/rover elements, baseline)
Launch date	2016–2022 (multi-mission program)
Orbit	Mars transfer / Mars orbit
Status	Active / delayed programs

ExoMars is a multi-part robotic program developed by the European Space Agency and Roscosmos to investigate Mars through orbital assets, surface platforms, and rover-based payloads. The program integrates contributions from national agencies such as the National Aeronautics and Space Administration, Italian Space Agency, CNES, and contractors including Airbus Defence and Space and Thales Alenia Space. It aims to characterize Martian geology, atmosphere, and potential biosignatures by combining remote sensing from orbit with subsurface access via drilling and in-situ analysis.

Overview

The program began as a cooperative initiative between European Space Agency and Roscosmos following earlier partnerships exemplified by missions like Mars Express and collaborations on International Space Station. It comprises orbiter missions, a surface platform, and a rover design facilitated by engineering teams from Arianespace, EADS Astrium (now Airbus Defence and Space), and research institutes including Max Planck Society, Imperial College London, Istituto Nazionale di Astrofisica, and Institut Supérieur de l'Aéronautique et de l'Espace. Political and technical coordination involved meetings at venues such as European Space Research and Technology Centre and negotiations with ministries represented at the European Commission and Russian Federal Space Agency leadership.

Mission Objectives

Primary objectives echo scientific goals set by bodies like the Committee on Space Research and the US National Research Council: to search for signs of past or present life, study Martian geochemistry, and prepare for future human exploration as outlined by advisory panels such as the Planetary Science Decadal Survey. Specific aims include subsurface access to preserved organic matter, atmospheric trace gas analysis analogous to studies performed by Mars Science Laboratory, and global context mapping similar to work by Mars Reconnaissance Orbiter. Cross-disciplinary researchers from institutions such as University of Oxford, California Institute of Technology, and Moscow State University contribute to experimental design and data interpretation.

Spacecraft and Instruments

The orbiter component includes instrumentation for hyperspectral imaging and atmospheric spectroscopy comparable to instruments on Mars Express and Trace Gas Orbiter predecessors. The surface segment incorporates a lander platform and a rover equipped with a 2-meter drill, a suite of spectrometers, chromatographs, and microscopes developed by consortia including European Space Research and Technology Centre, DLR, CNRS, and Istituto Nazionale di Fisica Nucleare. Key instruments parallel heritage from Curiosity and Perseverance suites: mass spectrometers, Raman spectrometers, X-ray diffraction/X-ray fluorescence instruments, and environmental sensors informed by teams at Jet Propulsion Laboratory, Open University, and University of Bern. Communications and navigation rely on deep-space transponder systems integrated by Thales Alenia Space and support centers such as European Space Operations Centre.

Mission Timeline and Flights

Initial mission phases trace back to cooperative agreements signed in the early 2000s and formalized during sessions at the European Space Policy Committee. The program executed an orbiter launch in 2016 and planned a surface flight in 2020 that was delayed; subsequent hardware iterations and launch windows were coordinated with agencies including Roscosmos and commercial launch provider Progress Rocket Space Centre partners. Flight operations include trajectory design methods used in Mars Express and Viking program heritage, with entry, descent, and landing systems drawing on analyses from NASA and crash/contingency studies from European Southern Observatory collaborators.

Scientific Results and Discoveries

Orbital remote-sensing data delivered high-resolution mapping of mineralogy, detecting phyllosilicates and sulfate deposits akin to discoveries by Mars Reconnaissance Orbiter and Mars Odyssey. Atmospheric measurements refined the understanding of trace gases and seasonal variability, contributing to debates initiated by detections from Trace Gas Orbiter and airborne studies relevant to Schiaparelli test analyses. Surface and subsurface datasets enabled geochemical context for sedimentary sequences comparable to interpretations from Gale Crater studies by Curiosity and Jezero Crater studies by Perseverance. Scientific teams from European Southern Observatory, Smithsonian Institution, and multiple universities published results in journals such as Nature (journal), Science (journal), and Planetary and Space Science.

Collaborations and Management

Program governance involved program boards and review panels comprised of representatives from European Space Agency, Roscosmos, UK Space Agency, Italian Space Agency, Centre National d'Études Spatiales, and industrial partners like Airbus Defence and Space and Thales Alenia Space. International scientific collaboration featured investigators affiliated with Max Planck Society, CNRS, University of Cambridge, Caltech, MIT, and Moscow State University. Budgetary and schedule oversight drew on practices from multinational projects such as James Webb Space Telescope and International Thermonuclear Experimental Reactor negotiations, with risk assessment frameworks informed by analyses used in Mars Reconnaissance Orbiter mission planning.

Controversies and Challenges

The program faced technical setbacks, programmatic delays, and geopolitical tensions similar to disruptions affecting projects like Galileo and cooperative ventures impacted by international sanctions. Launch failures and test anomalies prompted reviews echoing investigations into the Schiaparelli lander and historical lessons from Mars Climate Orbiter and Beagle 2. Intellectual property, export control, and supply-chain issues involved institutions such as European Space Research and Technology Centre and raised diplomatic questions addressed at meetings of the European Council and within bilateral dialogues between the European Commission and Russian Federation ministries. Scientific critics and proponents in forums like American Geophysical Union and European Planetary Science Congress debated priorities, costs, and strategic value relative to other flagship missions.

Category:Mars missions