What universe do we live in ? - Nature of dark energy - Cosmological parameter constraints - Distance scales - Large baryonic structures - Time and mode of formation of large structures - How do galaxies form and evolve ? - Role of AGN - Effect of the environment - Formation and evolution mechanism
Galactic archaeology
- Fundamental stellar parameters
The galaxy/Local Group 
Gaia & weave moons
Clusters of galaxies
- Cosmological probes clusters, Gas H1
 - Mass scale relationship between clusters
 
Euclid - SKA
Methodologies : large-scale surveys, automatic parameterisation
SKA : shareholding in SKAO and management of SKA France, technical shareholding under construction
Strong SNO : GAIA, L3S/MAGYC, EUCLID
Galaxie Cosmologie: meeting new challenges
- Scientific exploitation of GAIA and EUCLID spectro-ground surveys
 - Developing a cosmological numerical simulations axis to support observations
 - SKA involvement: co-design and SKA DATA centre
 - New SNO implications: SKATE, EUCLID-SURVEY, PLATO
 - Transversal GC-star axes: H0-distance scale, AGN, etc.
 - Multi-messenger-cosmo involvement: SKA/EUCLID/LISA synergy
 
GAIA-EUCLID ground segment
SKA involvement: 3IA - Labcom - ACRI
Participation in ELT/MOSAIC?
DATA-IA support: pipelines, databases via OCA-SNO-num, MSI-UCA
Contacts
Vanessa Hill, directrice de recherche CNRS, laboratoire Lagrange (Université Côte d'Azur - Observatoire de la Côtre d'Azur - CNRS), Vanessa.Hill@oca.eu
Erick Slezak, astronome à l'Observatoire de la Côte d'Azur, laboratoire Lagrange (Université Côte d'Azur - Observatoire de la Côtre d'Azur - CNRS), eric.slezak@oca.eu