Heidelberg 2022 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 3: Planets and Small bodies
EP 3.1: Hauptvortrag
Dienstag, 22. März 2022, 11:00–11:30, EP-H1
A new era of Venus exploration - seen Venus in a new light — •Jörn Helbert1, Melinda Darby Dyar2, Giulia Alemanno1, Alessandro Maturilli1, Nils Müller1, Doris Breuer1, VEM on VERTIAS team1, and VenSpec on Envision team1 — 1Institute for Planetary Research, DLR, Berlin, Germany — 2Mount Holyoke College, USA
Venus is our next-door planet. It is almost identical in size to Earth and yet we know so little about it. Recently three new mission have been selected to study Venus - the ESA EnVision and the NASA VERITAS and DAVINCI missions. The new interest in Venus has partly come through discussions with the exoplanet community about why their models always lean towards Earth-like planets. They have asked for fundamental parameters for Venus to improve their models, like the surface composition of Venus, and we just do not have the answers currently. This led to the realisation that we need to find out more about this planet that has evolved in such a different way from the Earth in order to understand how habitable planets evolve in general.
All three recently selected Venus missions include in their payload instruments focused on the 1 micron region. The NASA VERITAS and ESA EnVision missions use the DLR build Venus Emissivity Mapper (VEM) as a multi-spectral imaging system. The DAVINCI mission has a 1 micron descent imager. These new instruments have been made possible in part by a dedicated effort to set up a new Venus high temperature spectroscopy laboratory at DLR to routinely obtain VNIR emissivity spectra at relevant Venus surface temperatures.