The GENESIS satellite will bring together on a satellite platform all space geodesy techniques (GNSS, DORIS, VLBI and SLR). This is essential for the accurate and stable realization of the Earth reference frame.

We are involved in the development of tests of general relativity around the central black hole of the galaxy.

The analysis of very long baseline interferometry (VLBI) data allows to test the symmetries of space-time and thus to perform fundamental physics tests.

Our team was able to analyze the precise lunar laser ranging data in the framework of the SME formalism and to confirm that spacetime is such as predicted by general relativity.

The SYRTE Theory and Metrology Group is developing new methods to reduce various noises in the LISA data efficiently in order to detect gravitational waves and to extract scientific results for various types of sources.

The LISA mission by simultaneously observing more than tens of thousands of galactic binaries is the perfect opportunity to learn more on the internal physics of compact stars (neutron stars and white dwarfs) and spacetime properties around compact objects in general.

The purpose of the GASTON (GAlileo Survey of Transient Objects Network) project is to explore some possibilities offered by the Galileo constellation to search for signatures of variations of fundamental parameters in the close neighborhood of the Earth, predicted by models of dark matter (DM) transients.

The main purpose of the MICROSCOPE satellite, launched in April 2016, was to test the validity of the Weak Equivalence Principle (WEP) in space. According to this principle, all bodies should fall in the same way in a gravitational field.

ACES-PHARAO is a space mission aiming to realise a time scale on board the International Space Station, and also comparisons to be performed with clocks on ground, at several National Metrology Institutes. The SYRTE is heavily involved in the building of this mission, as well as its data analysis.