Nauen station

Nauen is a small town in the Havelland district, in Brandenburg, Germany. It is chiefly known for Nauen Transmitter Station, the world's oldest preserved radio transmitting installation.

Y3S was the callsign of an East German time signal station. The station was operated by the Measurements and Standards Service of the DDR in Berlin. The transmitter was located at Nauen Transmitter Station. The station transmitted in the HF band on 4.525 MHz with 5 kW. The transmission consisted of second pulses of 100 ms duration. Minute pulses were 500 ms long. Minute and hour information was transmitted in BCD code by modifying pulses of seconds 41 to 55. The vernerl time signal was transmitted on long wave from East Berlin at 11:55 for 5 minutes

Nauen Transmitter Station (German: Grossfunkstelle Nauen or Sender Nauen) in Nauen, Havelland district, Brandenburg, Germany, is the oldest continuously operating radio transmitting installation in the world. Germany's first high power radio transmitter, it was founded on 1 April 1906 by Telefunken corporation and operated as a longwave radiotelegraphy station through World War II, and during World War I became Germany's main link with the outside world when its submarine communications cables were cut. Upgraded with shortwave transmitters in the 1920s it was Germany's most advanced long range radio station, continually upgraded with the latest equipment and serving as an experimental station for Telefunken to test new technology. At the end of World War II, invading Russian troops dismantled and removed the transmitting equipment. During the Cold War it served as the GDR's (East Germany's) international shortwave station Radio Berlin International (RBI), and was the East Bloc's second most powerful radio station, disseminating Communist propaganda to other countries. Since German Reunification in 1991 it has been operated by Deutsche Telekom, Germany's state telecommunication service. The original 1920 transmitter building designed by architect Herman Muthesius is still used; it is the only remaining building designed by that architect.

Wustermark station is a railway station in the town of Wustermark in the Havelland region of the German state of Brandenburg, to the west of Berlin. The station is located on the Berlin–Lehrte railway and is connected with the Jüterbog–Nauen railway (originally built as part of a freight bypass), part of which became part of the Berlin outer ring in the 1950s. It is classified by Deutsche Bahn as a category 5 station.

Börnicke is a component locality (Ortsteil) of the town of Nauen in the Landkreis Havelland district of Brandenburg, Germany.

Wustermark is a municipality of the Havelland district, in Brandenburg, Germany.

Schönwalde-Glien is a municipality in the Havelland district, in Brandenburg, Germany.

The Nauen Plateau (German: Nauener Platte) is a low plateau in the German states of Brandenburg and Berlin. It rises above the surrounding countryside by an average of 15 metres (49 ft) and is a largely contiguous upland area that was formed during the Saale and Weichselian glaciations. It consists predominantly of ground moraine deposits, partly overlain by gently rolling end moraine formations. Whilst the neighbouring regions of Zauche to the south, the Teltow to the southeast and the Barnim to the northeast have the same name as their geological formation, the cultural landscape on the Nauen Plateau bears the historical and regional name of Havelland. That said, the river country of the Havelland extends beyond the plateau to include the Havel valley and other lowland areas.

Tremmen is a village in Brandenburg, Germany, situated in the district of Havelland. It is one of the civil parishes (Ortsteile) of the town of Ketzin.

Brieselang is a municipality in the Havelland district, in Brandenburg, Germany.

Brieselang station is a railway station in the municipality of Brieselang, located in the Havelland district in Brandenburg, Germany.

2024 BX1, previously known under its temporary designation Sar2736, was a 44 centimetre-sized (17 inches) asteroid or meteoroid that entered Earth's atmosphere on 21 January 2024 00:33 UTC and disintegrated as a meteor over Berlin. It was discovered less than three hours before impact by Hungarian astronomer Krisztián Sárneczky at Konkoly Observatory's Piszkéstető Station in the Mátra Mountains, Hungary. It was observed with the 60 cm Schmidt Telescope. Sárneczky first thought it was a known asteroid because it had a brightness of 18th magnitude, but he could not find it in any catalog, so he reported it to the Minor Planet Center. The fireball was observed by the cameras of the AllSky7 and Fripon networks. 2024 BX1 is the eighth asteroid discovered before impacting Earth, and is Sárneczky's third discovery of an impacting asteroid. Before it impacted, 2024 BX1 was a near-Earth asteroid on an Earth-crossing Apollo-type orbit. The bolide was studied in June 2024. It had a steep entry of 75.6° and an entry speed of 15.20 km/s. The bolide was observed with the SDAFO at Tautenburg, which took a spectrum of the bolide. The spectrum was low in iron, consistent with an enstatite-rich body (E-type asteroid). At a hight of 55 km the meteoroid fragmented into smaller pieces. These primary pieces then broke up again at a height of 39-29 km. The size and mass were first estimated at 1 meter and 1700 kg based on albedos of S-type asteroids. The radiometric measurements from the European Fireball Network did however suggest a mass of about 100 kg. Considering it was an E-type asteroid, which have higher albedos, the new estimates are 0.44 meters and 140 kg.