BEGIN:VCALENDAR VERSION:2.0 PRODID:-//AIP Calendar//www.aip.de// BEGIN:VEVENT SUMMARY:Colloquium: Konstantin Herbst DTSTART:20230406T123000Z DTEND:20230406T133000Z DTSTAMP:20260926T073630Z UID:www.aip.de-1682 CATEGORIES:Scientific CATEGORIES:Generic Event CATEGORIES:Public CONTACT:Julián Alvarado-Gómez DESCRIPTION:Title: Uncovering the Cosmic Threat: Exploring the Impact of C osmic Rays on Exoplanetary Habitability\nExoplanets are as diverse as they are fascinating. They vary from ultrahot Jupiter-like low-density planets to presumed gas-ice-rock mixture worlds that feature twice the Earth' \;s bulk density. But much remains to be explored regarding the great dive rsity of exoplanetary atmospheres. With the James Webb Space Telescope (JW ST) observing the first potential Earth-like exoplanetary atmospheres\, we are now on the verge of entering a new era of exoplanetary science in whi ch potential atmospheric biosignatures (such as ozone\, nitrous oxide\, an d methane) are interpreted with increasing sophistication in terms of the evolution of the planet-star system\, to assess and discount so-called fal se positives. However\, to interpret the upcoming observations\, model stu dies of planetary atmospheres that account for various processes — like an atmospheric escape\, outgassing\, climate\, photochemistry\, the physic s of air showers\, and the transport of cosmic rays through astrosphers\, planetary magnetic fields\, and planetary atmospheres — are necessary. H ere\, as an introduction to the field\, the impact of cosmic rays (CRs) on the atmospheric ionization and radiation exposure of the solar system pla nets Earth\, Mars\, and Venus will be discussed. Further\, utilizing the u nique model suite INCREASE\, the potential impact of cosmic rays on atmosp heric biosignatures of exoplanets and its consequences for observations wi th\, e.g\, JWST is being discussed.\n END:VEVENT END:VCALENDAR