David San Andrés

PhD student in astrophysics since 2023 January 1st, working on the RNA-world hypothesis for the origin of life on Earth from the astrophysical perspective.

[Víctor M. Rivilla @ryvendel]

Pleased to see the beautiful #MyACSCover of our review of stereoisomerISM published in @ACSPublications, with @MiguelSanzNovo (the artist!) and @DavidSAstro99. @C_Astrobiologia @CSIC

[Astrobiology @astrobiology]

Interstellar Stereoisomerism
https://t.co/aIWzZC5bYO #astrobiology #astrochemistry #organicchemistry #biochemistry

[Víctor M. Rivilla @ryvendel]

@MiguelSanzNovo @DavidSAstro99 @C_Astrobiologia @intaespana @CSIC @ACSPublications This review confirms that stereoisomerism is a fundamental contributor to interstellar molecular complexity.
It is already available in arXiv: https://t.co/byLgSd6XcH ;
and it will appear soon in Open Access in the ACS Earth and Space Chemistry journal (@ACSPublications) (🧵4/4)

[Víctor M. Rivilla @ryvendel]

@MiguelSanzNovo @DavidSAstro99 @C_Astrobiologia @intaespana @CSIC @ACSPublications We have discussed the mechanisms that can explain the stereoisomeric ratios (OSR) - defined as the column density ratio of the higher-energy isomer divided by that of the lower-energy isomer (🧵3/4 ).

[Víctor M. Rivilla @ryvendel]

@MiguelSanzNovo @DavidSAstro99 @C_Astrobiologia @intaespana @CSIC @ACSPublications "INTERSTELLAR STEREOISOMERISM”: stereoisomers are molecules that share the same bonding arrangement, but differ in the three-dimensional orientation of their atoms. These are the 16 stereoisomeric pairs detected in the interstellar medium so far (🧵2/4 ):

[Víctor M. Rivilla @ryvendel]

🚨 NEW PUBLICATION 🚨
"INTERSTELLAR STEREOISOMERISM”: In this review done with @MiguelSanzNovo and @DavidSAstro99
we present the first comprehensive overview of stereoisomerism in the interstellar medium. @C_Astrobiologia
@intaespana @CSIC @ACSPublications (🧵1/4 )

[Laura Colzi @L_Colzi]

🚀🏆 El 17 de marzo participé en la ceremonia de entrega de las #becas de doctorado y posdoctorado de la @FundlaCaixa del 2025. Un reconocimiento a 💯 @BecariosFLC que buscamos cambiar el futuro que viene.

[Nuria Fernández Huetos @nuriafdezh_uam]

📢 Nuevo artículo‼️Analizamos cómo estudiantes de 4.º y 6.º EP usan datos (mapas, gráficas, textos vídeos) para argumentar 🤔, qué soluciones proponen💡 y qué diferencias surgen según el curso y modalidad de trabajo 🙌🏼 https://t.co/rNJcmb3DPI

@MDPIOpenAccess @EducSci_MDPI

[Nuria Fernández Huetos @nuriafdezh_uam]

‼️Nuevo artículo en @FrontEducation que explora cómo estudiantes de 8-12 años de distintos contextos socioeconómicos abordan un problema ambiental utilizando destrezas STEM para argumentar y resolver el caso: https://t.co/qVNMAbz1ZG

@giecmes @TaELH_UAM @FaculEDUAM

[Miguel Sanz-Novo @MiguelSanzNovo]

@ryvendel (4) 👨‍🔬 Work led by Mitsunori Araki (MPE) and @MiguelSanzNovo (@C_Astrobiologia)

🔗 CAB press release: https://t.co/Lgk9H0a17R

📄 Paper published in Nature Astronomy: https://t.co/2qxd7st60e

[Miguel Sanz-Novo @MiguelSanzNovo]

(3)🌌The molecule was identified in the Galactic center molecular cloud G+0.693–0.027, by combining ultra-deep astronomical observations from a large observational survey led by CAB (@ryvendel), with new laboratory experiments conducted at MPE (M. Araki, Valerio Lattanzi et al.)

[Miguel Sanz-Novo @MiguelSanzNovo]

🚨Astrophysicists Discover the Largest Sulfur-Containing Molecule in Space🚨New press release from the @C_Astrobiologia @CSIC announcing a landmark collaboration with the Max Planck Institute for Extraterrestrial Physics, now published in #NatureAstronomy

[Sustainability @Sus_MDPI]

Fresh Article!

Primary-Education Students’ Performance in Arguing About a Socioscientific Issue: The Case of Pharmaceuticals in Surface Water

Check out: https://t.co/fncy4xNWJn

#mdpi #Sustainability #education #Students #water

[Nuria Fernández Huetos @nuriafdezh_uam]

¿Se pueden trabajar las CSC con estudiantes de Primaria? ¿Argumentan basándose en pruebas? ¿Proponen soluciones sobre la presencia de fármacos en aguas? ✅
@stuartuam @iguevara_uam @esquivel_uam y yo te lo contamos ⤵️

https://t.co/3oLzJ5Eooc

#mdpisustainability @Sus_MDPI

[David San Andrés @DavidSAstro99]

@JacoboAguirreA @marina_f_ruz @C_Astrobiologia @mncn_csic @CSIC ¡¡Enhorabuena Marina!! Más que merecido 🙌🏽💯

[Víctor M. Rivilla @ryvendel]

@DavidSAstro99 The paper has been accepted in The Astrophysical Journal (@IOPPublishing), and a preprint is already available at:
https://t.co/a3bvyFJI96
@DavidSAstro99 @C_Astrobiologia

[Víctor M. Rivilla @ryvendel]

🚨NEW RESULT!🚨 In a recent work led by @DavidSAstro99 we have detected for the first time in space the molecule H2CNCN (N-cyanomethanimine), the stable dimer of HCN of highest energy, and the most complex interstellar molecule containing the prebiotically relevant NCN backbone.