Paris Institute of Astrophysics (IAP) is a Joint Research Unit of the Pierre and Marie Curie University and the National Center for Scientific Research (CNRS). IPA became an Observatory of Sciences of the Universe in December 2005. It is collaborated with Laboratories excellence Institute Lagrange of Paris and Space Exploitation of Planetary Environments since their creation in 2011. It hosts the Master 2 specialty "Astronomy, Astrophysics and Space Engineering", as well as the UPMC antenna of the Doctoral School of Astronomy and Astrophysics. It maintains privileged partnerships with the Observatories de Paris, located on the same campus. Since 1988, it hosts the General Secretariat of the International Astronomical Union (UAI). IPA is actively involved in the dissemination of science, particularly through the organization of public conferences every first Tuesday of the month. IPA has the capability of bringing together astrophysicists from the Universes science sector and physicists, theoreticians in the physical and mathematical sciences. IPA focuses on research related to high energy physics or mathematics. Research is divided in to four main functions in IPA. Astronomy is essentially a science of observation which is main aspect of IPAs activities. Participation in the scientific preparation of new instruments on the ground or in space is a mission in which IPA is also very involved where observation provides enormous amounts of data and modeling of these observations is also an important task for researchers. IAP focuses on the leading fields of astrophysics: the formation of planetary systems and the search for extra solar planets, stellar physics, galaxy evolution, large-scale structures, observational cosmology and Theoretical, the physics of the primordial Universe and the phenomena of extreme energy. In IPA the research is based on numerical calculations, or advanced analytical calculations. IPA consists of 150 researcher’s engineers, technicians, administrators, post-doctoral fellows and doctoral students, and regularly hosts many trainees and foreign visitors. The institutes researchers are grouped into research groups around similar or complementary themes, and using common means for data analysis, interpretation and modelling they coordinate the scientific life of the laboratory, and participate in the definition of its main orientations which share basic support from CNRS and UPMC followings are research groups in IPA i. High Energy Astrophysics and Early Universe ii. Exoplanets and interstellar medium iii. Large structures and deep universe iv. Origin and evolution of galaxies v. Stellar, planetary and extra-solar planets vi. Theoretical physics: gravitation and cosmology IPA laboratory is involved in various projects aimed at providing new data or new modeling in cutting-edge fields.