Keith’s note: This report may be updated over the course of the day. Dale’s departure from Cape Town was scheduled for 10:00 am Local time but ended up at 10:28 […]
Icy Worlds
![A comparison of the dominant heating and cooling mechanism for different times and at the time of the maximum temperature. Each model is started at 𝑇 = 10 K. -- [astro-ph.GA]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/UCLCHEM.png?resize=1200%2C716&ssl=1)
Posted inAstrochemistry
UCLCHEM 4.0: An Open Source Gas-grain Astrochemistry Simulation Framework
[astro-ph.GA] Astrochemical modeling is a key tool for the understanding of the formation and destruction of molecules in the dense gas of the interstellar medium, as observed by modern day […]
Posted inDale Andersen's Field Reports
Astrobiologist Dale Andersen’s Antarctic Field Report: 25 October 2026: Hurry Up And Wait
Dale Andersen: “Hurry up and wait.” Anyone who works in the polar regions knows the phrase, and knows the experience: storms, blowing snow, and low visibility set the schedule.
Posted inTitan
Detection Of Hydrocarbons In Titan Using High-resolution Cross-correlation Spectroscopy
[astro-ph.EP]. High-resolution cross-correlation spectroscopy (HRCCS) is a powerful technique for detecting molecules whose individual spectral lines are too weak to be identified directly, but its sensitivity is limited by the […]
Posted inIcy Worlds
Isobaric Crystallization of Aqueous Magnesium Chloride Solutions at Icy Moon Conditions
[ACS] Subsurface oceans inside icy moons are expected to contain dissolved salts whose crystallization controls the mineralogy of their hydrospheres and potentially their surfaces.
![Meridional overturning streamfunction (Ψ). Meridional sections of zonally–integrated streamfunction (Sverdrups, 1 Sv ≡ 10 6 m 3 s−1 ) in the (a) IG_Ctrl, (b) Glac_Ref, (c) IG_N50, and (d) IG_N100 simulations. Positive (red) values denote clockwise overturning, while negative (blue) values denote counterclockwise overturning. The apparent diapycnal transport at ~60°S in (a) IG_Ctrl and (c) IG_N50 may be related to the effect of standing meanders [see Jansen (2017)] but does not impinge upon our results. -- Journal of Climate](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/New-discovery.png?resize=1200%2C720&ssl=1)
Posted inIcy Worlds
New Discovery Links Hemispheres In The Mystery Of Earth’s Past Ice Ages
[University of St. Andrews] New research from the University of St Andrews has uncovered a thus unknown process which may have helped drive the Earth in to past ice ages.
Posted inCryobiology
How High-pressure Ices On Large Ocean Worlds Can Support Habitability: The Compatibility Of Amino Acids Into Ice VI And VII
[Science Advances] Water oceans in large icy moons and exoplanets are isolated from the rocky interior by thick layers of high-pressure ice, which hinder the direct release of nutrients and […]
Posted inCryobiology
Ice Drives The Emergence Of Functional Protocells
[biorxiv.org] A defining feature of living systems is the high local concentration of diverse molecular components within membrane-bounded compartments.
![Longitude–height structure of the rotational component of the stationary s = 1 zonal wind anomaly, near the Huygens latitude band during Ls = 290◦–310◦ -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Topographically.png?resize=1200%2C719&ssl=1)
Posted inTitan
Topographically Forced Stationary Waves Can Explain The Near-Surface Zonal Winds Observed By Huygens On Titan
[astro-ph.EP] Titan’s equatorial superrotation is associated with climatological retrograde (westward) near-surface winds at low latitudes, as consistently simulated by Titan general circulation models.
Posted inArctic / Antarctic / Alpine
Microbial Mats Influence The Isotopic Composition And Provenance of Soil Organic Matter In The McMurdo Dry Valleys, Antarctica
[Biogeosciences via ESS Open Archive] In the McMurdo Dry Valleys (MDV), Antarctica, microbial mats are responsible for primary productivity in both aquatic and terrestrial ecosystems; yet their influence on soil […]