Mastodawn

This event marks the simultaneous observation of the interstellar comet 3I/ATLAS by Ultraviolet Spectrograph (UVS) instruments aboard ESA's Juice and NASA's Europa Clipper spacecraft. The informally coordinated effort successfully captured the comet's ultraviolet emissions, gas breakdown, and scattered dust from both hemispheres.
#Astronomy #PlanetaryScience #Astrochemistry #Astrophysics #Spacecrafts #sflorg
https://www.sflorg.com/2026/05/astr05132601.html

Dual Observation of Comet 3I/ATLAS

Juice and Europa Clipper spacecraft simultaneously observe interstellar comet 3I/ATLAS, revealing unique carbon emissions and cosmic origins.

KillBait News Apr 27

Detecting Molecules in Space: Excitement and Caution in the Search for Life

📰 Original title: Potential signs of life on distant planets sound exciting – but confirmation can take years

🤖 IA: It's clickbait ⚠️
👥 Usuarios: It's clickbait ⚠️

View full AI summary: https://killbait.com/en/detecting-molecules-in-space-excitement-and-caution-in-the-search-for-life/?redirpost=b68c65c4-aece-4ecd-9589-a4c3cfe85c8f

#astronomy #astrochemistry #exoplanets #biosignatures

Detecting Molecules in Space: Excitement and Caution in the Search for Life

Astronomers use telescopes, particularly radio telescopes, to detect molecules in the atmospheres of distant planets, nebulae, and galaxies far beyond the Milky Way. Over nearly a century…

KillBait Archive

KillBait Apr 27

Detecting Molecules in Space: Excitement and Caution in the Search for Life

📰 Original title: Potential signs of life on distant planets sound exciting – but confirmation can take years

🤖 IA: It's clickbait ⚠️
👥 Usuarios: It's clickbait ⚠️

View full AI summary: https://killbait.com/en/detecting-molecules-in-space-excitement-and-caution-in-the-search-for-life/?redirpost=b68c65c4-aece-4ecd-9589-a4c3cfe85c8f

#astronomy #astrochemistry #exoplanets #biosignatures

Detecting Molecules in Space: Excitement and Caution in the Search for Life

Astronomers use telescopes, particularly radio telescopes, to detect molecules in the atmospheres of distant planets, nebulae, and galaxies far beyond the Milky Way. Over nearly a century…

KillBait Archive

Frieder Apr 17

Something different for this #WindowFriday - this is a small KBr window (it's transparent to mid-infrared radiation) on a #cryogenic sample holder inside a #vacuum chamber. As you can see, it's cracked, but luckily it still served the purpose as a substrate for growing ice layers on it. We then irradiated these layers in a #laboratory #astrochemistry experiment at #GANIL in Caen, France.

#science #Fensterfreitag #prettycold #cosmicrays

adsdaily Apr 6

📄 The UMIST Database for Astrochemistry 2022

Quicklook:
Millar, T. J. et al. (2024) · Astronomy and Astrophysics
Reads: 164 · Citations: 92
DOI: 10.1051/0004-6361/202346908

🔗 https://ui.adsabs.harvard.edu/abs/2024A&A...682A.109M/abstract

#Astronomy #Astrophysics #Astrochemistry #MolecularData #MolecularProcesses

The UMIST Database for Astrochemistry 2022

Context. Detailed astrochemical models are a key component to interpret the observations of interstellar and circumstellar molecules since they allow important physical properties of the gas and its evolutionary history to be deduced. Aims: We update one of the most widely used astrochemical databases to reflect advances in experimental and theoretical estimates of rate coefficients and to respond to the large increase in the number of molecules detected in space since our last release in 2013. Methods: We present the sixth release of the UMIST Database for Astrochemistry (UDfA), a major expansion of the gas-phase chemistry that describes the synthesis of interstellar and circumstellar molecules. Since our last release, we have undertaken a major review of the literature which has increased the number of reactions by over 40% to a total of 8767 and increased the number of species by over 55% to 737. We have made a particular attempt to include many of the new species detected in space over the past decade, including those from the QUIJOTE and GOTHAM surveys, as well as providing references to the original data sources. Results: We use the database to investigate the gas-phase chemistries appropriate to both O-rich and C-rich conditions in TMC-1 and to the circumstellar envelope of the C-rich AGB star IRC+10216 and identify successes and failures of gas-phase only models. Conclusions: This update is a significant improvement to the UDfA database. For both the dark cloud and C-rich circumstellar envelope models, calculations match around 60% of the abundances of observed species to within an order of magnitude. There are a number of detected species, however, that are not included in the model either because their gas-phase chemistry is unknown or because they are likely formed via surface reactions on icy grains. Future laboratory and theoretical work is needed to include such species in reaction networks.

ADS

Scientific Frontline Mar 11

Moons orbiting free-floating planets can maintain liquid water oceans and potentially support complex life for billions of years without a parent star, utilizing dense hydrogen atmospheres and tidal heating.
#Astrophysics #Astrochemistry #Biophysics #sflorg
https://www.sflorg.com/2026/03/asph03112601.html

Exoplanets: Conditions suitable for life on distant moons

The atmosphere determines whether this heat is retained at the surface.

Scientific Frontline Jan 24

Researchers have definitively identified nitrous oxide (N₂O), commonly known as "laughing gas," within the solid ice mantles coating dust particles around young #protostars
#Astrophysics #Astrochemistry #Astronomy #sflorg
https://www.sflorg.com/2026/01/asph01242601.html

UrFU Researchers Discovered “Laughing Gas” in Interstellar Ices around Protostars

More than 300 different molecules have been identified in the gas clouds that form stars and planets

adsdaily Jan 12

📄 A KInetic Database for Astrochemistry (KIDA)

Quicklook:
Wakelam, V. et al. (2012) · The Astrophysical Journal Supplement Series
Reads: 460 · Citations: 484
DOI: 10.1088/0067-0049/199/1/21

🔗 https://ui.adsabs.harvard.edu/abs/2012ApJS..199...21W/abstract

#Astronomy #Astrophysics #PlanetaryScience #Astrochemistry #AstronomicalDatabasesMiscellaneous

A KInetic Database for Astrochemistry (KIDA)

We present a novel chemical database for gas-phase astrochemistry. Named the KInetic Database for Astrochemistry (KIDA), this database consists of gas-phase reactions with rate coefficients and uncertainties that will be vetted to the greatest extent possible. Submissions of measured and calculated rate coefficients are welcome, and will be studied by experts before inclusion into the database. Besides providing kinetic information for the interstellar medium, KIDA is planned to contain such data for planetary atmospheres and for circumstellar envelopes. Each year, a subset of the reactions in the database (kida.uva) will be provided as a network for the simulation of the chemistry of dense interstellar clouds with temperatures between 10 K and 300 K. We also provide a code, named Nahoon, to study the time-dependent gas-phase chemistry of zero-dimensional and one-dimensional interstellar sources.

ADS

adsdaily Dec 28

📄 The UMIST database for astrochemistry 2012

Quicklook:
McElroy, D. et al. (2013) · Astronomy and Astrophysics
Reads: 84 · Citations: 833
DOI: 10.1051/0004-6361/201220465

🔗 https://ui.adsabs.harvard.edu/abs/2013A&A...550A..36M/abstract

#Astronomy #Astrophysics #Astrochemistry #MolecularData #MolecularProcesses

The UMIST database for astrochemistry 2012

We present the fifth release of the UMIST Database for Astrochemistry (UDfA). The new reaction network contains 6173 gas-phase reactions, involving 467 species, 47 of which are new to this release. We have updated rate coefficients across all reaction types. We have included 1171 new anion reactions and updated and reviewed all photorates. In addition to the usual reaction network, we also now include, for download, state-specific deuterated rate coefficients, deuterium exchange reactions and a list of surface binding energies for many neutral species. Where possible, we have referenced the original source of all new and existing data. We have tested the main reaction network using a dark cloud model and a carbon-rich circumstellar envelope model. We present and briefly discuss the results of these models. All codes, along with reaction networks and data files, are accessible at <A href="http://www.udfa.net">http://www.udfa.net</A>.

ADS

Markus Osterhoff Nov 18, 2025

Weiter geht's mit 25 Jahre First Lasing #FLASH #TTF @DESY

Melanie Schnell: From FLASH to the Stars - Photochemistry of Polycyclic Aromatic Hydrocarbons

Heute ein faszinierender Blick „von FLASH bis zu den Sternen“: Melanie Schnell zeigt, wie wir mit modernen Laser- und Röntgenquellen die Photochemie polyzyklischer aromatischer Kohlenwasserstoffe (PAHs) untersuchen.

Diese komplexen Kohlenstoffringe finden sich nicht nur in Flammen und unserer Atmosphäre, sondern auch im interstellaren Medium – überall in der Galaxie. Überraschend: Rund 10–20 % des gesamten galaktischen Kohlenstoffs steckt in PAH-Molekülen!

Mit präzisen Labormethoden lassen sich ihre Strukturen und Reaktionen entschlüsseln – ein wichtiger Schritt, um besser zu verstehen, wie sich Moleküle im Weltraum bilden, verändern und vielleicht sogar Bausteine des Lebens hervorbringen. ✨🌌

#Astrochemistry #PAH #FLASH #PhotonScience [Tröt unterstützt durch ein LLM]