Sirius is the brightest star in the night sky. Its name is derived from the Greek word Σείριος. The star is designated α Canis Majoris, Latinized to Alpha Canis Majoris, and abbreviated Alpha CMa or α CMa. With a visual apparent magnitude of −1.46, Sirius is almost twice as bright as Canopus, the next brightest star. Sirius is a binary star consisting of a main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, termed Sirius B. The distance between the two varies between 8.2 and 31.5 astronomical units as they orbit every 50 years.
Sirius Satellite Radio was a satellite radio (SDARS) and online radio service operating in North America, owned by Sirius XM Holdings.
The Starkenburg Observatory is an astronomical observatory in Heppenheim, Germany. It was founded in 1970, and currently has about 150 members.
The Berlin Observatory is a German astronomical institution with a series of observatories and related organizations in and around the city of Berlin in Germany, starting from the 18th century. It has its origins in 1700 when Gottfried Leibniz initiated the "Brandenburg Society of Science″ which would later (1744) become the Prussian Academy of Sciences. The Society had no observatory but nevertheless an astronomer, Gottfried Kirch, who observed from a private observatory in Berlin. A first small observatory was furnished in 1711, financing itself by calendrical computations.
Eschenberg Observatory is an astronomical observatory owned and operated by the Astronomical Society of Winterthur. It is located in northeastern Switzerland in Winterthur and was founded in 1979.
Stuttgart Observatory is an astronomical observatory owned and operated by the association Schwäbische Sternwarte e.V.. It is located on the Uhlandshöhe in Stuttgart, Germany. Public tours have been held since 1920 and the observatory claims to be one of the oldest in Germany.
Hamburg Observatory is an astronomical observatory located in the Bergedorf borough of the city of Hamburg in northern Germany. It is owned and operated by the University of Hamburg, Germany since 1968, although it was founded in 1825 by the City of Hamburg and moved to its present location in 1912. It has operated telescopes at Bergedorf, at two previous locations in Hamburg, at other observatories around the world, and it has also supported space missions.
Sonneberg Observatory is an astronomical observatory and was formerly an institute of the Academy of Science in the German Democratic Republic. It was founded in 1925 by Cuno Hoffmeister and is located in Sonneberg, Thuringia, Germany. The Sonneberg Observatory has one of the world's largest collections of photographic plates in its museum of astronomy.
Astrophysikalisches Institut und Universitäts-Sternwarte Jena is an astronomical observatory owned and operated by Friedrich Schiller University of Jena. It is located in Großschwabhausen close to Jena, Germany.
The Sternwarte Düsseldorf in Düsseldorf-Bilk was a private observatory founded in 1843 by Johann Friedrich Benzenberg. The observatory's main feature was a refracting telescope with 1800mm focal length. After Benzenberg's death the observatory was bequeathed to the city of Düsseldorf. It was destroyed by bombing in 1943.
The Archenhold Observatory was named in honour of Friedrich Simon Archenhold, is an observatory in Berlin-Treptow. It houses the Großer Refraktor, which is the longest pointable telescope in the world. It is also called the Himmelskanone.
Family Talk is a Christian focused talk radio channel on the Sirius XM Radio service Sirius channel 161 and XM channel 131. It replaced FamilyNet Radio's Sirius XM feed on November 30, 2010. It was added to XM Radio Canada on April 1, 2007. The station remained on Sirius 161 until May 4, 2011 when Sirius XM moved the station on both XM and Sirius to Channel 131.
Sirius XM Holdings Inc. is an American broadcasting company headquartered in Midtown Manhattan, New York City that provides satellite radio and online radio services operating in the United States. It was formed by the 2008 merger of Sirius Satellite Radio and XM Satellite Radio, merging them into SiriusXM Radio. The company also has a 70% equity interest in Sirius XM Canada, an affiliate company that provides Sirius and XM service in Canada. On 21 May 2013, Sirius XM Holdings, Inc. was incorporated, and in January 2020, Sirius XM reorganized their corporate structure, which made Sirius XM Radio Inc. a direct, wholly owned subsidiary of Sirius XM Holdings, Inc.
Sternwarte Uecht is an observatory on Längenberg at Niedermuhlern, Canton of Berne, Switzerland.
Jura-Sternwarte Grenchen is an astronomical observatory owned and operated by Stiftung Jura-Sternwarte. Built in 1976, it is located near Grenchen in the Canton of Solothurn, Switzerland.
Hubelmatt Observatory is an astronomical observatory in Lucerne, Switzerland, billeted at the city's Hubelmatt West School. Built in 1979, it is operated by the Astronomical Society of Lucerne.
The Grateful Dead Channel is a Sirius XM Radio channel playing music spanning American rock band The Grateful Dead's entire career including unreleased concert recordings.
Sirius FM-5, also known as Radiosat 5, is an American communications satellite which is operated by Sirius XM Radio. It was constructed by Space Systems Loral, based on the LS-1300 bus, and carries a single transponder designed to transmit in the NATO E, F and I bands. It is currently being used to provide satellite radio broadcasting to North America.
The Sankt Andreasberg Observatory, also called Harz Observatory, is a project of the charitable society Sternwarte Sankt Andreasberg e. V., which translates into Sankt Andreasberg Observatory registered society. It was opened in August 2014 and is supposed to become the first completely barrier free Observatory in Germany. The society's expressive goal is to make the sky accessible to all people, whether they are disabled or not. Celestial observation, lectures and Workshops convey general astronomical knowledge to visitors.
