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Backscattered Solar Lyman-α Emission as a Tool for the Heliospheric Boundary Exploration

Bertaux, Jean-Loup; Lallement, Rosine; Quémerais, Eric +4 more

This review summarizes our current understanding of the outer heliosphere and local interstellar medium (LISM) inferred from observations and modeling of interplanetary Lyman-α emission. The emission is produced by solar Lyman-α photons (121.567 nm) backscattered by interstellar H atoms inflowing to the heliosphere from the LISM. Studies of Lyman-…

The ExoMars Schiaparelli Entry, Descent and Landing Demonstrator Module (EDM) System Design

Bayle, Olivier; Ball, Andrew J.; Blancquaert, Thierry +3 more

The Entry, Descent and Landing Demonstrator Module (EDM) named Schiaparelli, was the ESA-led Mars lander element of the ESA-Roscosmos ExoMars 2016 mission. Following launch on 14 March 2016 with the ExoMars Trace Gas Orbiter (TGO) and cruise to Mars, Schiaparelli separated for encounter with Mars to demonstrate entry, descent and landing technolog…

Solar System Science with the Orbiting Astronomical Satellite Investigating Stellar Systems (OASIS) Observatory

Hartogh, Paul; Anderson, Carrie M.; Tielens, Alexander +6 more

The overarching theme of the Orbiting Astronomical Satellite for Investigating Stellar Systems (OASIS), an Astrophysics MIDEX-class mission concept, is Following water from galaxies, through protostellar systems, to Earth's oceans. The OASIS science objectives address fundamental questions raised in "Pathways to Discovery in Astronomy and Astrophy…

Observations of the Solar F-Corona from Space

Llebaria, A.; Lamy, P. L.; Gilardy, H.

We present a review of the observations of the solar F-corona from space with a special emphasis of the 25 years of continuous monitoring achieved by the LASCO-C2 and C3 coronagraphs. Our work includes images obtained by the navigation cameras of the Clementine spacecraft, the SECCHI/HI-1A heliospheric imager onboard STEREO-A, and the Wide Field I…

Observations and Modeling of Martian Auroras

Haider, S. A.; Bougher, S. W.; Schneider, N. M. +4 more

Observations of planetary auroras form a new area of planetary exploration from space, especially for nonmagnetic planets since various kinds of auroras like Discrete, Proton and Diffuse auroras have been observed at Mars. We review the latest results of Martian auroras obtained by the instruments (1) SPICAM (Spectroscopy for the Investigation of …

Navigation and Orbit Estimation for New Horizons' Arrokoth Flyby: Overview, Results and Lessons Learned

Weaver, Harold A.; Kavelaars, J. J.; Gwyn, Stephen D. J. +18 more

The New Horizons mission performed a successful flyby of Arrokoth, a distant Kuiper-Belt Object, on January 1, 2019, representing the farthest planetary encounter to date. The navigation strategy and performance required to deliver the spacecraft to the desired flyby target were driven by a number of challenges including those related to Arrokoth'…

Correction to: The Psyche Topography and Geomorphology Investigation

Williams, David A.; Bell, James F.; Jaumann, Ralf +16 more