Innerste

GEO600 is a gravitational wave detector located near Sarstedt, a town 20 km to the south of Hanover, Germany. It is designed and operated by scientists from the Max Planck Institute for Gravitational Physics, Max Planck Institute of Quantum Optics and the Leibniz Universität Hannover, along with University of Glasgow, University of Birmingham and Cardiff University in the United Kingdom, and is funded by the Max Planck Society and the Science and Technology Facilities Council (STFC). GEO600 is capable of detecting gravitational waves in the frequency range 50 Hz to 1.5 kHz, and is part of a worldwide network of gravitational wave detectors. This instrument, and its sister interferometric detectors, when operational, are some of the most sensitive gravitational wave detectors ever designed. They are designed to detect relative changes in distance of the order of 10−21, about the size of a single atom compared to the distance from the Sun to the Earth. Construction on the project began in 1995.In March 2020 the COVID-19 pandemic forced the suspension of operation of other gravitational wave observatories such as LIGO and Virgo (and in April 2020, KAGRA) but GEO600 continued operations.As of 2023, GEO600 is active in its gravitational wave observation operations.

Sarstedt (German: Bahnhof Sarstedt) is a railway station located in Sarstedt, Germany. The station is located on the Hanoverian Southern Railway. The train services are operated by Deutsche Bahn, Metronom and Erixx. The station is also served by the Hanover S-Bahn.

Gleidingen is a part of the town of Laatzen in the district of Hanover, in Lower Saxony, Germany. It is situated south of both Hanover and the center of Laatzen.

Sarstedt is a town in the district of Hildesheim, Lower Saxony, Germany. It has approximately 18,500 inhabitants. Sarstedt is situated 20 km south of Hanover and 10 km north of Hildesheim. Sarstedt station is on the Hanoverian Southern Railway and is served by the Hanover S-Bahn. The GEO 600 gravitational wave detector is located nearby. The former independent municipality Giften has been a part of Sarstedt since 1 March 1974.

Rethen (Leine) is a part of the town of Laatzen in the district of Hanover, in Lower Saxony, Germany. It is situated south of both Hanover and the center of Laatzen.

The Calenberg is a hill in central Germany in the Leine depression near Pattensen in the municipality of Schulenburg. It lies 13 km west of the city of Hildesheim in south Lower Saxony on the edge of the Central Uplands. It is made from a chalk marl slab (Kalkmergelbank), has a height of 70 m above NN and was formed almost 100 million years ago at the beginning of the Upper Cretaceous series in Cenomanian stage. The Calenberg became historically important as a result of the fort, stronghold and castle built as the main residence of the House of Hanover.

Calenberg Castle (German: Burg Calenberg, later called Schloss Calenberg and Feste Calenberg; ruins known as Alt Calenberg) was a medieval lowland castle in central Germany, near Schulenburg in the borough of Pattensen, 13 km west of the city of Hildesheim. It was built as a water castle in 1292 by the Welf duke, Otto the Strict, in der Leine river meadows between 2 branches of the Leine river on the southern part of the chalk marl hill of the Calenberg. At the start of the 16th century it was converted into a fort (Feste). In the 15th century, Fort Calenberg gave its name to the Welf Principality of Calenberg. Following the Thirty Years' War it lost its military importance and was slighted. Today it is a ruin with underground vaults that are surrounded by high ramparts.

Pattensen (German: [ˈpatn̩zn̩] ) is a town in the district of Hanover, in Lower Saxony, Germany. It is situated approximately 12 km (7 mi) south of Hanover.

Laatzen is a town in the district of Hanover, in Lower Saxony, Germany. It is situated directly south of Hanover.

Giesen is a village and a municipality in the district of Hildesheim, in Lower Saxony, Germany. It is situated approximately 6 km northwest of Hildesheim, and 22 km southeast of Hanover. The municipality includes five villages: Ahrbergen (pop. 2,219) Emmerke (pop. 1,684) Giesen (pop. 3,401) Groß Förste (pop. 795) Hasede (pop. 1,606)

ZAG-Arena (formerly Preussag Arena and TUI Arena) is an arena in Hanover, Germany. The arena opened in 2000 and holds 10,767, during hockey or handball matches and up to 14,000, during concerts. It is the biggest indoor-venue in the Hanover Region and most major concerts are held there. The arena is situated at the Expo Plaza in the Expo 2000 grounds, in the south of Hanover, astride the Kronsberg and Mittelfeld areas.

Emmerke is a part of the municipality of Giesen in the district of Hildesheim, Lower Saxony, in north-western Germany.