![]() © NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington A Brief Overview of Mercury Mercury’s cratered surface gives it an appearance similar to our Moon. Business Date to Date (exclude holidays).Izenberg, Mercury’s exosphere: observations MESSENGER’s first Mercury flyby. Ukhorskiy, Science objectives and rationale for the Radiation Belt Storm Probes mission. ![]() Mangano et al., BepiColombo science investigations during cruise and during flybys at the Earth, Venus and Mercury. Yeoman, MESSENGER X-ray observations of magnetosphere-surface interaction on the nightside of Mercury. Winslow, Comprehensive survey of energetic electron events in Mercury’s magnetosphere with data from the MESSENGER Gamma-Ray and Neutron Spectrometer. Anderson, A dynamic model of Mercury’s magnetospheric magnetic field. Grün, Mercury Dust Monitor (MDM) onboard the Mio orbiter of the BepiColombo mission. Hayakawa, Mission Data Processor aboard the BepiColombo Mio spacecraft: design and scientific operation concept. Usui, Plasma Wave Investigation (PWI) aboard BepiColombo Mio on the trip to the first measurement of electric fields, electromagnetic waves, and radio waves around Mercury. Matsumoto, The plasma wave investigation (PWI) onboard the BepiColombo/MMO: first measurement of electric fields, electromagnetic waves, and radio waves around Mercury. Mukai, The BepiColombo/MMO model payload and operation plan. Queloz, Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1. Szabo, The Solar Probe Plus mission: humanity’s first visit to our star. van der Holst, Atmospheric escape from the TRAPPIST-1 planets and implications for habitability. Cohen, Is Proxima Centauri B habitable? A study of atmospheric loss. Poh, MESSENGER observations of fast plasma flows in Mercury’s magnetotail. Solomon, Mercury’s seasonal sodium exosphere: MESSENGER orbital observations. Giles, Magnetospheric multiscale overview and science objectives. Zender, The BepiColombo team, BepiColombo - mission overview and science goals. Ziethe, BepiColombo-comprehensive exploration of Mercury: mission overview and science goals. Fujimoto, The BepiColombo-Mio magnetometer en route to Mercury. Shinohara, Magnetic field investigation of Mercury’s magnetosphere and the inner heliosphere by MMO/MGF. Schroeder, The space physics environment data analysis system (SPEDAS) Space Sci. This paper gives an overview of the Mio spacecraft and its mission, operations plan, and data handling and archiving. Because of strong constraints on operations during its orbiting phase around Mercury, sophisticated observation and downlink plans are required in order to maximize science outputs. Mio is a spin-stabilized spacecraft designed to investigate Mercury’s space environment, with a powerful suite of plasma instruments, a spectral imager for the exosphere, and a dust monitor. BepiColombo, a joint mission to Mercury by the European Space Agency and Japan Aerospace Exploration Agency, will address remaining open questions using two spacecraft, Mio and the Mercury Planetary Orbiter. In addition, investigating Mercury’s dynamic magnetosphere also plays a key role to understand extreme exoplanetary environment and its habitability conditions against strong stellar winds. This complex system makes Mercury an excellent science target to understand effects of the solar wind to planetary environments. Mercury has a unique and complex space environment with its weak global magnetic field, intense solar wind, tenuous exosphere, and magnetospheric plasma particles.
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