The inaugural IGrav meeting was held in July 2019, following the Amaldi meeting in Valencia, Spain. IGrav brings together members of different collaborations and experiments from the broad field of gravity research.

The European Physical Society (EPS) is a not for profit association whose members include 42 National Physical Societies in Europe, individuals from all fields of physics, and European research institutions.

As a learned society, the EPS engages in activities that strengthen ties among the physicists in Europe. As a federation of National Physical Societies, the EPS studies issues of concern to all European countries relating to physics research, science policy and education.

The Nuclear Physics European Collaboration Committee is an Expert Committee of the European Science Foundation.

The objective of NuPECC is to:

• develop the strategy for European Collaboration in nuclear science by supporting collaborative ventures between research groups within Europe, and
• promote nuclear physics and its trans-disciplinary use in applications for societal benefit.

In pursuing this objective the Committee shall:

EPPCN

The European Particle Physics Communication Network (EPPCN) is a network established by CERN Council in 2005 following the approval of the European strategy for particle physics. It is a network of professional communication officers from each Member and Associate States.

EPPCN's mandate:

- Strengthen communication between communications officers in the Member and Associate States;

- Sharing best practices and maximize benefit in the Member and Associate States;

APPEC is a consortium of 19 funding agencies, national government institutions, and institutes from 17 European countries, responsible for coordinating and funding national research efforts in astroparticle physics.

The Interactions Collaboration seeks to support the international science of particle physics and to set visible footprints for peaceful collaboration across all borders.

The Interactions.org website is designed to serve as central resource for information about particle physics, including press releases, articles, news, event listings and images. (It seems fitting that the World Wide Web, which came from particle physics, should have a role in supporting the science that created it.)

The LHCb (Large Hadron Collider beauty) experiment at CERN, located at Point 8 of the LHC near Geneva, focuses on studying b-quarks to understand the differences between matter and antimatter. It started operating in 2010 and investigates CP violation and rare particle decays, providing insights into why the universe is dominated by matter. LHCb has made significant discoveries, including exotic particles like tetraquarks and pentaquarks, and has observed CP violation in baryons. Its findings test the Standard Model and explore potential new physics.

HAWC is located on the flanks of the Sierra Negra volcano near Puebla, Mexico at an altitude of 4100 meters (13,500 feet). The observatory is made up of 300 tanks filled with ultra-purified water that, through the cherenkov effect, can detect the arrival of charged particles. It has an instantaneous field of view covering 15% of the sky, and during each 24 hour period HAWC observes two-thirds of the sky.