BEGIN:VCALENDAR PRODID:-//Trumba Corporation//Trumba Calendar Services 0.11.25602//EN VERSION:2.0 CALSCALE:GREGORIAN X-WR-CALNAME:College of Arts and Sciences|Astronomy|Astrobiology X-WR-TIMEZONE:America/Los_Angeles METHOD:PUBLISH BEGIN:VTIMEZONE TZID:America/Los_Angeles BEGIN:STANDARD TZOFFSETFROM:-0700 TZOFFSETTO:-0800 TZNAME:PST DTSTART:20071104T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0800 TZOFFSETTO:-0700 TZNAME:PDT DTSTART:20070311T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT SUMMARY:Astrobiology Colloquium Frankie Pavia Presenting LOCATION:Physics-Astronomy Auditorium (PAA) DTSTART;TZID=America/Los_Angeles:20260407T150000 DTEND;TZID=America/Los_Angeles:20260407T160000 X-MICROSOFT-CDO-ALLDAYEVENT:FALSE X-TRUMBA-CUSTOMFIELD;NAME="Event Type";ID=21;TYPE=number:Generic UW Even t X-TRUMBA-CUSTOMFIELD;NAME="Event interval";ID=30051;TYPE=CustomAsset:Sin gle day event X-TRUMBA-CUSTOMFIELD;NAME="Campus location";ID=30032;TYPE=CustomAsset:Ph ysics-Astronomy Auditorium (PAA) X-TRUMBA-CUSTOMFIELD;NAME="Online Meeting Link";ID=54756;TYPE=Url:https: //uw.hosted.panopto.com/Panopto/Pages/Sessions/List.aspx?folderID=a4240f 1a-7c5a-4f6e-bb74-b3ed016976bd X-TRUMBA-CUSTOMFIELD;NAME="Campus room";ID=28429;TYPE=SingleLine:PAA A10 2 X-TRUMBA-CUSTOMFIELD;NAME="Accessibility Contact";ID=62969;TYPE=SingleLi ne:Liza Young X-TRUMBA-CUSTOMFIELD;NAME="Event Types";ID=30073;TYPE=CustomAsset:Academ ics X-TRUMBA-CUSTOMFIELD;NAME="Event image";ID=40;TYPE=Image:https://www.tru mba.com/i/DgD8rs5tin7avbQcom9sI%2AHq.png DTSTAMP:20260402T125329Z DESCRIPTION:Event interval: Single day event\nCampus location: Physics-A stronomy Auditorium (PAA)\nOnline Meeting Link: https://uw.hosted.panopt o.com/Panopto/Pages/Sessions/List.aspx?folderID=a4240f1a-7c5a-4f6e-bb74- b3ed016976bd\nCampus room: PAA A102\nAccessibility Contact: Liza Young\n Event Types: Academics\n\nTitle: Using cosmic dust to understand sea ice \, ice melt\, and polar biogeochemistry\n\n \n\nAbstract: Connections be tween ice coverage shifts and marine productivity in the Arctic are diff icult to discern using short instrumental records spanning only decades. The geologic past holds clues that could unlock these connections\, but existing mechanisms to reconstruct sea ice coverage and ice melt produc e equivocal results. We have developed a new technique to reconstruct ic e coverage in the Arctic using the accumulation history of fine-grained interplanetary dust particles\, which accrete to Earth’s surface at a co nstant rate in space and time. During periods of prolonged sea-ice cover age\, this cosmic dust is blocked from deposition at the seafloor. We wi ll present results from cosmic dust-based sea-ice reconstructions in com bination with reconstructions of surface nutrient utilization by Arctic phytoplankton to deduce future controls on Arctic marine productivity un der conditions of sea-ice decline. CATEGORIES:Astrobiology IMAGE;VALUE=URI:https://www.trumba.com/i/DgD8rs5tin7avbQcom9sI%2AHq.png UID:http://uid.trumba.com/event/200131703 X-TRUMBA-LINK:https://depts.washington.edu/astrobio/wordpress/news-event s/upcoming-events/?trumbaEmbed=view%3devent%26eventid%3d200131703 END:VEVENT BEGIN:VEVENT SUMMARY:Astrobiology Colloquium Jordyn Robare LOCATION:Physics-Astronomy Auditorium (PAA) DTSTART;TZID=America/Los_Angeles:20260414T150000 DTEND;TZID=America/Los_Angeles:20260414T160000 X-MICROSOFT-CDO-ALLDAYEVENT:FALSE X-TRUMBA-CUSTOMFIELD;NAME="Event Type";ID=21;TYPE=number:Generic UW Even t X-TRUMBA-CUSTOMFIELD;NAME="Event interval";ID=30051;TYPE=CustomAsset:Sin gle day event X-TRUMBA-CUSTOMFIELD;NAME="Campus location";ID=30032;TYPE=CustomAsset:Ph ysics-Astronomy Auditorium (PAA) X-TRUMBA-CUSTOMFIELD;NAME="Campus room";ID=28429;TYPE=SingleLine:PAA A10 2 X-TRUMBA-CUSTOMFIELD;NAME="Accessibility Contact";ID=62969;TYPE=SingleLi ne:Liza Young X-TRUMBA-CUSTOMFIELD;NAME="Event Types";ID=30073;TYPE=CustomAsset:Academ ics X-TRUMBA-CUSTOMFIELD;NAME="Event image";ID=40;TYPE=Image:https://www.tru mba.com/i/DgD8rs5tin7avbQcom9sI%2AHq.png DTSTAMP:20260403T140536Z DESCRIPTION:Event interval: Single day event\nCampus location: Physics-A stronomy Auditorium (PAA)\nCampus room: PAA A102\nAccessibility Contact: Liza Young\nEvent Types: Academics\n\nTitle: From Earth to Enceladus: U sing Chemical Thermodynamics to Explore the Relationship between Life an d Environment\n\n \n\nAbstract: Life relies on materials and energy from the environment\, and the transfer of this energy to organisms can be q uantified by thermodynamic modeling. I explored this relationship across several systems. First\, I quantified energy supplies available to micr oorganisms in Yellowstone National Park (YNP) hot springs. Using geochem ical data from 959 samples collected over more than 20 years\, I calcula ted affinities of 111 redox reactions and found that 67 can supply energ y to microorganisms. Aerobic ammonia and sulfide oxidation offer the hig hest energy supplies park-wide\, followed by ferrous iron oxidation at l ow pH. On the demand side\, I built propfit\, an open-source Python pack age that estimates thermodynamic properties of organic molecules ranging from simple solutes to complex membrane lipids. From Yellowstone sample s\, I identified several membrane-spanning bacterial lipids previously u ndescribed in hot springs\, whose methylation patterns correlate strongl y with pH. Finally\, I applied affinity calculations to hypothetical org anic synthesis reactions in the plumes of Saturn's moon Enceladus\, sugg esting that the sign of reaction affinities can distinguish plausibly ab iotic molecules from potentially biotic ones. I am currently extracting lipids from drill core samples from Atlantis Massif near the Lost City H ydrothermal Field. CATEGORIES:Astrobiology IMAGE;VALUE=URI:https://www.trumba.com/i/DgD8rs5tin7avbQcom9sI%2AHq.png UID:http://uid.trumba.com/event/200214837 X-TRUMBA-LINK:https://depts.washington.edu/astrobio/wordpress/news-event s/upcoming-events/?trumbaEmbed=view%3devent%26eventid%3d200214837 END:VEVENT BEGIN:VEVENT SUMMARY:Astrobiology Colloquium Andrew Fountain LOCATION:Physics-Astronomy Auditorium (PAA) DTSTART;TZID=America/Los_Angeles:20260421T150000 DTEND;TZID=America/Los_Angeles:20260421T160000 X-MICROSOFT-CDO-ALLDAYEVENT:FALSE X-TRUMBA-CUSTOMFIELD;NAME="Event Type";ID=21;TYPE=number:Generic UW Even t X-TRUMBA-CUSTOMFIELD;NAME="Event interval";ID=30051;TYPE=CustomAsset:Sin gle day event X-TRUMBA-CUSTOMFIELD;NAME="Campus location";ID=30032;TYPE=CustomAsset:Ph ysics-Astronomy Auditorium (PAA) X-TRUMBA-CUSTOMFIELD;NAME="Campus room";ID=28429;TYPE=SingleLine:PAA A10 2 X-TRUMBA-CUSTOMFIELD;NAME="Accessibility Contact";ID=62969;TYPE=SingleLi ne:Liza Young X-TRUMBA-CUSTOMFIELD;NAME="Event Types";ID=30073;TYPE=CustomAsset:Academ ics X-TRUMBA-CUSTOMFIELD;NAME="Event image";ID=40;TYPE=Image:https://www.tru mba.com/i/DgBw9suJmVyttKY93Sb5G5qF.jpg DTSTAMP:20260403T144426Z DESCRIPTION:Event interval: Single day event\nCampus location: Physics-A stronomy Auditorium (PAA)\nCampus room: PAA A102\nAccessibility Contact: Liza Young\nEvent Types: Academics\n\nTitle: Cryoconite Holes - A refug ia in icy environments.\n\n \n\nAbstract: Cryoconite holes are water-fil led cylindrical shaped depressions in glacier ice that provide a habitat for microorganisms. Solar radiation preferentially heats sediment patch es residing on a glacier\, which then melts the underlying ice creating a depression. The solar heated sediment maintains the water phase throug hout the summer. The sediment (and biota) is typically wind transported and sourced from the soils surrounding the glacier. Although cryoconite holes are common to all glaciers\, those in the McMurdo Dry Valleys\, An tarctica are unique in that they are ice-capped and isolated from the at mosphere. These entombed habitats can survive as such for as much as a d ecade and develop unusual chemistries. This presentation will emphasize the physical aspects of cryoconite formation and evolution\, and summari ze some of the chemical and biological characteristics. CATEGORIES:Astrobiology IMAGE;VALUE=URI:https://www.trumba.com/i/DgBw9suJmVyttKY93Sb5G5qF.jpg UID:http://uid.trumba.com/event/200214969 X-TRUMBA-LINK:https://depts.washington.edu/astrobio/wordpress/news-event s/upcoming-events/?trumbaEmbed=view%3devent%26eventid%3d200214969 END:VEVENT BEGIN:VEVENT SUMMARY:Astrobiology Colloquium Don Brownlee LOCATION:Physics-Astronomy Auditorium (PAA) DTSTART;TZID=America/Los_Angeles:20260428T150000 DTEND;TZID=America/Los_Angeles:20260428T160000 X-MICROSOFT-CDO-ALLDAYEVENT:FALSE X-TRUMBA-CUSTOMFIELD;NAME="Event Type";ID=21;TYPE=number:Generic UW Even t X-TRUMBA-CUSTOMFIELD;NAME="Event interval";ID=30051;TYPE=CustomAsset:Sin gle day event X-TRUMBA-CUSTOMFIELD;NAME="Campus location";ID=30032;TYPE=CustomAsset:Ph ysics-Astronomy Auditorium (PAA) X-TRUMBA-CUSTOMFIELD;NAME="Campus room";ID=28429;TYPE=SingleLine:PAA A10 2 X-TRUMBA-CUSTOMFIELD;NAME="Accessibility Contact";ID=62969;TYPE=SingleLi ne:Liza Young X-TRUMBA-CUSTOMFIELD;NAME="Event Types";ID=30073;TYPE=CustomAsset:Academ ics X-TRUMBA-CUSTOMFIELD;NAME="Event image";ID=40;TYPE=Image:https://www.tru mba.com/i/DgD3O916bIeyO-xmpyZZGWko.jpg DTSTAMP:20260403T144252Z DESCRIPTION:Event interval: Single day event\nCampus location: Physics-A stronomy Auditorium (PAA)\nCampus room: PAA A102\nAccessibility Contact: Liza Young\nEvent Types: Academics\n\nTitle: The composition of habitab le terrestrial planets\n\n \n\nAbstract: Earth\, the only proven habitab le planet\, was assembled by the rapid accretion of large planetesimals in the early solar system. Although many rocky exoplanets might be simil ar to Earth\, the composition of our planet varies from all other solid solar system bodies including the asteroids and comets. It is reasonable to expect that rocky exoplanets may differ from each other in ways that may influence their longterm habitability. CATEGORIES:Astrobiology IMAGE;VALUE=URI:https://www.trumba.com/i/DgD3O916bIeyO-xmpyZZGWko.jpg UID:http://uid.trumba.com/event/200214967 X-TRUMBA-LINK:https://depts.washington.edu/astrobio/wordpress/news-event s/upcoming-events/?trumbaEmbed=view%3devent%26eventid%3d200214967 END:VEVENT BEGIN:VEVENT SUMMARY:Astrobiology Colloquium Research Rotations An Li and Morgan Raim ondo LOCATION:Physics-Astronomy Auditorium (PAA) DTSTART;TZID=America/Los_Angeles:20260505T150000 DTEND;TZID=America/Los_Angeles:20260505T160000 X-MICROSOFT-CDO-ALLDAYEVENT:FALSE X-TRUMBA-CUSTOMFIELD;NAME="Event Type";ID=21;TYPE=number:Generic UW Even t X-TRUMBA-CUSTOMFIELD;NAME="Event interval";ID=30051;TYPE=CustomAsset:Sin gle day event X-TRUMBA-CUSTOMFIELD;NAME="Campus location";ID=30032;TYPE=CustomAsset:Ph ysics-Astronomy Auditorium (PAA) X-TRUMBA-CUSTOMFIELD;NAME="Campus room";ID=28429;TYPE=SingleLine:PAA A10 2 X-TRUMBA-CUSTOMFIELD;NAME="Accessibility Contact";ID=62969;TYPE=SingleLi ne:Liza Young X-TRUMBA-CUSTOMFIELD;NAME="Event Types";ID=30073;TYPE=CustomAsset:Academ ics X-TRUMBA-CUSTOMFIELD;NAME="Event image";ID=40;TYPE=Image:https://www.tru mba.com/i/DgA9UpbHZQx0NZaeOziXG%2Aiz.jpg DTSTAMP:20260403T144826Z DESCRIPTION:Event interval: Single day event\nCampus location: Physics-A stronomy Auditorium (PAA)\nCampus room: PAA A102\nAccessibility Contact: Liza Young\nEvent Types: Academics\n\nAn Li\nTitle: Tale of two sugars: trehalose and hyaluronic acid in a frozen Enceladus-analog brine\n\nAbs tract: Erupting from a subsurface ocean\, the plumes of Enceladus are co mposed of flash-frozen ice grains composed of varying amounts of salts a nd organics. How the organics within these plumes partition during freez ing relative to the salts and ice grains is not fully understood. While prior works have focused on amino acids and chondritic organics in analo g frozen brines for Enceladus and Europa\, more complex molecules such a s sugars have not been studied. Here we evaluate the hydrophilic sugars trehalose and hyaluronic acid using micro-Raman imaging. We conducted fl ash-freezing and slow-freezing experiments of these sugars in an analog Enceladus brine made of NaCl\, Na2CO3\, NH4Cl\, and KCl. Raman maps reve aled that in both freezing scenarios\, trehalose and hyaluronic acid hav e similar spatial distributions to those of the salt minerals natron (Na 2CO3•10H2O) and hydrohalite (NaCl•2H2O). This demonstrates that the solu te-solute interactions between the sugars and salts dominate so that the salts concentrate the sugars\, despite the hydrogen bonding capabilitie s of both sugars. Due to the preferential spatial association of organic s with salts\, future missions should prioritize Type III\, salt-rich gr ains\, from the Enceladus plumes as prime candidates for biosignatures. \n\nMorgan Raimondo TBD CATEGORIES:Astrobiology IMAGE;VALUE=URI:https://www.trumba.com/i/DgA9UpbHZQx0NZaeOziXG%2Aiz.jpg UID:http://uid.trumba.com/event/200214973 X-TRUMBA-LINK:https://depts.washington.edu/astrobio/wordpress/news-event s/upcoming-events/?trumbaEmbed=view%3devent%26eventid%3d200214973 END:VEVENT BEGIN:VEVENT SUMMARY:Astrobiology Colloquium Research Rotations Patrick Monreal LOCATION:Physics-Astronomy Auditorium (PAA) DTSTART;TZID=America/Los_Angeles:20260512T150000 DTEND;TZID=America/Los_Angeles:20260512T160000 X-MICROSOFT-CDO-ALLDAYEVENT:FALSE X-TRUMBA-CUSTOMFIELD;NAME="Event Type";ID=21;TYPE=number:Generic UW Even t X-TRUMBA-CUSTOMFIELD;NAME="Event interval";ID=30051;TYPE=CustomAsset:Sin gle day event X-TRUMBA-CUSTOMFIELD;NAME="Campus location";ID=30032;TYPE=CustomAsset:Ph ysics-Astronomy Auditorium (PAA) X-TRUMBA-CUSTOMFIELD;NAME="Campus room";ID=28429;TYPE=SingleLine:PAA A10 2 X-TRUMBA-CUSTOMFIELD;NAME="Accessibility Contact";ID=62969;TYPE=SingleLi ne:Liza Young X-TRUMBA-CUSTOMFIELD;NAME="Event Types";ID=30073;TYPE=CustomAsset:Academ ics X-TRUMBA-CUSTOMFIELD;NAME="Event image";ID=40;TYPE=Image:https://www.tru mba.com/i/DgA9UpbHZQx0NZaeOziXG%2Aiz.jpg DTSTAMP:20260403T145509Z DESCRIPTION:Event interval: Single day event\nCampus location: Physics-A stronomy Auditorium (PAA)\nCampus room: PAA A102\nAccessibility Contact: Liza Young\nEvent Types: Academics CATEGORIES:Astrobiology IMAGE;VALUE=URI:https://www.trumba.com/i/DgA9UpbHZQx0NZaeOziXG%2Aiz.jpg UID:http://uid.trumba.com/event/200214979 X-TRUMBA-LINK:https://depts.washington.edu/astrobio/wordpress/news-event s/upcoming-events/?trumbaEmbed=view%3devent%26eventid%3d200214979 END:VEVENT BEGIN:VEVENT SUMMARY:AbSciCon 2026 DTSTART;TZID=America/Los_Angeles:20260517T080000 DTEND;TZID=America/Los_Angeles:20260522T170000 X-MICROSOFT-CDO-ALLDAYEVENT:FALSE X-TRUMBA-CUSTOMFIELD;NAME="Event Type";ID=21;TYPE=number:Generic UW Even t X-TRUMBA-CUSTOMFIELD;NAME="Event interval";ID=30051;TYPE=CustomAsset:Sin gle day event X-TRUMBA-CUSTOMFIELD;NAME="Accessibility Contact";ID=62969;TYPE=SingleLi ne:Liza Young X-TRUMBA-CUSTOMFIELD;NAME="Event Types";ID=30073;TYPE=CustomAsset:Confer ences DTSTAMP:20260403T145732Z DESCRIPTION:Event interval: Single day event\nAccessibility Contact: Liz a Young\nEvent Types: Conferences CATEGORIES:Astrobiology UID:http://uid.trumba.com/event/200214983 X-TRUMBA-LINK:https://depts.washington.edu/astrobio/wordpress/news-event s/upcoming-events/?trumbaEmbed=view%3devent%26eventid%3d200214983 END:VEVENT BEGIN:VEVENT SUMMARY:Astrobiology Colloquium TBD LOCATION:Physics-Astronomy Auditorium (PAA) DTSTART;TZID=America/Los_Angeles:20260526T150000 DTEND;TZID=America/Los_Angeles:20260526T160000 X-MICROSOFT-CDO-ALLDAYEVENT:FALSE X-TRUMBA-CUSTOMFIELD;NAME="Event Type";ID=21;TYPE=number:Generic UW Even t X-TRUMBA-CUSTOMFIELD;NAME="Event interval";ID=30051;TYPE=CustomAsset:Sin gle day event X-TRUMBA-CUSTOMFIELD;NAME="Campus location";ID=30032;TYPE=CustomAsset:Ph ysics-Astronomy Auditorium (PAA) X-TRUMBA-CUSTOMFIELD;NAME="Campus room";ID=28429;TYPE=SingleLine:PAA A10 2 X-TRUMBA-CUSTOMFIELD;NAME="Accessibility Contact";ID=62969;TYPE=SingleLi ne:Liza Young X-TRUMBA-CUSTOMFIELD;NAME="Event Types";ID=30073;TYPE=CustomAsset:Academ ics DTSTAMP:20260403T145831Z DESCRIPTION:Event interval: Single day event\nCampus location: Physics-A stronomy Auditorium (PAA)\nCampus room: PAA A102\nAccessibility Contact: Liza Young\nEvent Types: Academics CATEGORIES:Astrobiology UID:http://uid.trumba.com/event/200214985 X-TRUMBA-LINK:https://depts.washington.edu/astrobio/wordpress/news-event s/upcoming-events/?trumbaEmbed=view%3devent%26eventid%3d200214985 END:VEVENT END:VCALENDAR