Versonnex, Ain

Sauverny (French pronunciation: [sovɛʁni]; Arpitan: Sovèrnê) is a commune in the Ain department in eastern France. It is located between the Jura mountains in France and Lac Leman, bordering the Canton of Geneva, Switzerland.

The Compact Muon Solenoid (CMS) experiment is one of two large general-purpose particle physics detectors built on the Large Hadron Collider (LHC) at CERN in Switzerland and France. The goal of the CMS experiment is to investigate a wide range of physics, including the search for the Higgs boson, extra dimensions, and particles that could make up dark matter. CMS is 21 metres long, 15 m in diameter, and weighs about 14,000 tonnes. Over 4,000 people, representing 206 scientific institutes and 47 countries, form the CMS collaboration who built and now operate the detector. It is located in a cavern at Cessy in France, just across the border from Geneva. In July 2012, along with ATLAS, CMS tentatively discovered the Higgs boson. By March 2013 its existence was confirmed.

The TOTEM experiment (TOTal Elastic and diffractive cross section Measurement) is one of the nine detector experiments at CERN's Large Hadron Collider. The other eight are: ATLAS, ALICE, CMS, LHCb, LHCf, MoEDAL, FASER and SND@LHC. It shares an interaction point with CMS. The detector aims at measurement of total cross section, elastic scattering, and diffraction processes. The primary instrument of the detector is referred to as a Roman pot. In December 2020, the D0 and TOTEM Collaborations made public the odderon discovery based on a purely data driven approach in a CERN and Fermilab approved preprint that was later published in Physical Review Letters. In this experimental observation, the TOTEM proton-proton data in the region of the diffractive minimum and maximum was extrapolated from 13, 8, 7 and 2.76 TeV to 1.96 TeV and compared this to D0 data at 1.96 TeV in the same t-range giving an odderon significance of 3.4 σ. When combined with TOTEM experimental data at 13 TeV at small scattering angles providing an odderon significance of 3.4 - 4.6 σ, the combination resulted in an odderon significance of at least 5.2 σ.

The Bâtie-Beauregard - which can be translated from French as "building with a beautiful gaze" - is a ruined hill castle in the municipality of Collex-Bossy and one of the few remnants of a medieval castle in what is now the Canton of Geneva in Switzerland.

Ségny (French pronunciation: [seɲi]), also written Segny, is a commune in the Ain department in eastern France. Ségny is situated in the east of the department, in a district of the Lake Geneva / River Rhône basin known as the Pays de Gex. It lies on the important RN 5 trunk road from Paris to Geneva and is just five minutes by road from Geneva Cointrin International Airport. A local bus service connects Ségny to Geneva city centre, which is some 13 km (8.1 mi) away. Ségny became a member of the Pays de Gex Community of Communes on 1 January 1996. The commune is bordered by Cessy to the north, Versonnex to the east, Prévessin-Moëns and Ornex to the south, and Échenevex and Chevry to the west.

Cessy (French pronunciation: [sesi]) is a commune in the Ain department in eastern France. The area was first inhabited by two farming families in the eleventh century, and as the town has grown its agricultural heritage has remained a significant feature, with the populated area surrounded by a vast expanse of fields and an annual agricultural festival.

Grilly (French pronunciation: [ɡʁiji]; Arpitan: Grelyi) is a commune in the Ain department in eastern France. As of 2020, it is the commune with the highest median per capita income (€55,100 per year) in France.

Communauté d'agglomération du Pays de Gex is the communauté d'agglomération, an intercommunal structure, centred on the town of Gex. It is located in the Ain department, in the Auvergne-Rhône-Alpes region, eastern France. Created in 1995, the administrative seat is located in its namesake commune of Gex. Its area is 404.9 km2. Its population was 98,257 in 2019, of which 13,121 lived in Gex proper.

The arrondissement of Gex is an arrondissement of France in the Ain department in the Auvergne-Rhône-Alpes region. It approximately corresponds to the historical region of the Pays de Gex. It has 27 communes. Its population is 93,027 (2016), and its area is 404.9 km2 (156.3 sq mi).

The Geneva Observatory (French: Observatoire de Genève, German: Observatorium von Genf) is an astronomical observatory at Sauverny (CH) in the municipality of Versoix, Canton of Geneva, in Switzerland. It shares its buildings with the astronomy department of the École Polytechnique Fédérale de Lausanne. It has been active in discovering exoplanets, in stellar photometry, modelling stellar evolution, and has been involved in the European Space Agency's Hipparcos, INTEGRAL, Gaia, and Planck missions. In 1995, the first exoplanet of a main-sequence star, 51 Pegasi b, had been discovered by two scientist of the observatory, Michel Mayor and Didier Queloz, using the radial velocity method with the 1.9-metre telescope at Haute-Provence Observatory in France. Mayor and Queloz were awarded (half of) the Nobel Prize in Physics 2019 for this discovery.Besides a 1-metre telescope located at the French Haute-Provence Observatory (but owned by Geneva Observatory), the Geneva Observatory also operates the 1.2-metre Leonhard Euler Telescope. In cooperation with the Belgian University of Liège, it supports TRAPPIST, a 0.6-metre telescope specialized in observing comets and exoplanets. Both telescopes (Euler and TRAPPIST) are located at ESO's La Silla Observatory in northern Chile. In 2010, TRAPPIST was also involved in the controversial size-comparison of the two dwarf planets Eris and Pluto. The Geneva Observatory also participates in the Next-Generation Transit Survey, an international collaboration with several Universities from the United Kingdom as well as from Chile and Germany. Located at Paranal Observatory in Chile, the ground-based, robotic search facility for exoplanets began science operations in early 2015.

Chavannes-des-Bois (French pronunciation: [ʃavan de bwa] ) is a municipality in the district of Nyon in the canton of Vaud in Switzerland.

Collex-Bossy is a municipality of the Canton of Geneva, Switzerland.