A calendar is a system of organizing days for social, religious, commercial or administrative purposes. This is done by giving names to periods of time, typically days, weeks, months and years. A date is the designation of a single, specific day within such a system. A calendar is also a physical record of such a system. A calendar can also mean a list of planned events, such as a court calendar or a partly or fully chronological list of documents, such as a calendar of wills.
The Solar System is the gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly. Of the objects that orbit the Sun directly, the largest are the eight planets, with the remainder being smaller objects, such as the five dwarf planets and small Solar System bodies. Of the objects that orbit the Sun indirectly—the moons—two are larger than the smallest planet, Mercury.
Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis.
A one-hit wonder is any entity that achieves mainstream popularity, often for only one piece of work, and becomes known among the general public solely for that momentary success. The term is most commonly used in regard to music performers with only one hit single that overshadows their other work. Sometimes, artists dubbed "one-hit wonders" in a particular country have had great success in other countries. Music artists with subsequent popular albums and hit listings are typically not considered a one-hit wonder. One-hit wonders usually see their popularity decreasing after their hit listing and most often don't return to hit listings with other songs or albums.
Rama II is a science fiction novel by Gentry Lee and Arthur C. Clarke, first published in 1989. It recounts humankind's further interaction with the Ramans, first introduced in Rendezvous with Rama. Written primarily by Lee, Rama II has a distinctly different writing style than the original, with a more character-driven narrative and a closer-to-contemporary mindset, ambience and human relations than the first novel's more futuristic tones.
Snottite, also snoticle, is a microbial mat of single-celled extremophilic bacteria which hang from the walls and ceilings of caves and are similar to small stalactites, but have the consistency of nasal mucus. In the Frasassi Caves in Italy, over 70% of cells in Snottite have been identified as Acidithiobacillus thiooxidans, with smaller populations including an archaeon in the uncultivated 'G-plasma' clade of Thermoplasmatales (>15%) and a bacterium in the Acidimicrobiaceae family (>5%).
Aries (♈) from March 21st to April 19th is the first astrological sign in the zodiac, spanning the first 30 degrees of celestial longitude, and originates from the constellation of the same name. Under the tropical zodiac, the Sun transits this sign from approximately March 21 to April 19 each year. This time duration is exactly the first month of the Solar Hijri calendar (Hamal/Farvardin/Wray).
Seven Ancient Wonders is a book written by Australian author Matthew Reilly in 2005. Its sequel, The Six Sacred Stones was released in the autumn of 2007. The most recent novel in the series, The Three Secret Cities, was released in Australia on October 30, 2018.
Libra (♎) is the seventh astrological sign in the Zodiac. It spans 180°–210° celestial longitude. Under the tropical zodiac, the Sun transits this area on average between September 23 and October 22, and under the sidereal zodiac, the sun currently transits the constellation of Libra from approximately October 31 to November 22. The symbol of the scales is based on the Scales of Justice held by Themis, the Greek personification of divine law and custom. She became the inspiration for modern depictions of Lady Justice. The ruling planet of Libra is Venus. Libra is the only zodiac constellation in the sky represented by an inanimate object. The other eleven signs are represented either as an animal or mythological characters throughout history.
Chanquillo or Chankillo is an ancient monumental complex in the Peruvian coastal desert, found in the Casma-Sechin basin in the Ancash Department of Peru. The ruins include the hilltop Chankillo fort, the nearby Thirteen Towers solar observatory, and residential and gathering areas. The Thirteen Towers have been interpreted as an astronomical observatory built in the 4th century BC. The culture that produced Chankillo is called the Casma/Sechin culture or the Sechin Complex.
Ebrahim Victory was born in Tehran, Iran on 26 December 1933. He attended the Kourosh Primary School and the Firooz Bahram High School in Iran. He came to the United States in 1952, and after one year of studying English at Wesley Junior College in Dover, Delaware, he attended M.I.T. from 1953 to 1958, where he received the degrees of Bachelor of Science, and Master of Science in Mechanical Engineering with specialties in textiles technology and aerodynamics. During the years 1957-1958, he also taught a course on textiles technology at the graduate school of M.I.T., and performed research on a project for the U.S. Air Force designing a wind tunnel for testing parachute fabrics.
The Universe is an American documentary television series that features computer-generated imagery and computer graphics of astronomical objects in the universe plus interviews with experts who study in the fields of cosmology, astronomy, and astrophysics. The program is produced by Flight 33 Productions and Workaholic Productions.
Marcus Chown is a science writer, journalist and broadcaster, currently cosmology consultant for New Scientist magazine.
Various lists of the Wonders of the World have been compiled from antiquity to the present day, to catalogue the world's most spectacular natural wonders and manmade structures.
Sheridan Tongue is a BAFTA-nominated British television and film music composer. He has written and produced music for many television shows including the BBC's Wonders of the Universe and Wonders of the Solar System, Silent Witness and Spooks, the score for which achieved a BAFTA Television Craft nomination for Best Original Television Music; he has also engineered records for artists such as Blur, Beverley Knight and The Verve.
Wonders of the Solar System is a 2010 television series co-produced by the BBC and Science Channel, and hosted by physicist Brian Cox. Wonders of the Solar System was first broadcast in the United Kingdom on BBC Two on 7 March 2010. The series comprises five episodes, each of which focuses on an aspect of the Solar System and features a 'wonder' relevant to the theme. The series was described as one of the most successful to appear on BBC Two in recent years. An accompanying book with the same name was also published.
Wonders of the Universe is a 2011 television series produced by the BBC, Discovery Channel, and Science Channel, hosted by physicist Professor Brian Cox. Wonders of the Universe was first broadcast in the United Kingdom on BBC Two from 6 March 2011. The series comprises four episodes, each of which focuses on an aspect of the universe and features a 'wonder' relevant to the theme. It follows on from Cox's 2010 series for the BBC, Wonders of the Solar System. An accompanying book with the same title was also published.
Wonders of Life is a 2013 television documentary series presented by physicist Brian Cox. The series was produced by the BBC and Chinese state television network CCTV-9 and aired in the United Kingdom from 27 January 2013 at 9:00 pm on BBC Two. An accompanying book with the same title was also published.
Forces of Nature is a four-part television documentary series presented by physicist Brian Cox. The series was co-produced by BBC Studios, PBS and France Télévisions and originally aired in the United Kingdom weekly from 4 July 2016 at 21:00 on BBC One.
