Comet Ikeya–Seki

Comet Ikeya–Seki, formally designated C/1965 S1, 1965 VIII, and 1965f, was a long-period comet discovered independently by Kaoru Ikeya and Tsutomu Seki. First observed as a faint telescopic object on September 18, 1965, the first calculations of its orbit suggested that on October 21, it would pass just 450,000 km above the Sun's surface, and would probably become extremely bright.

Comets can defy such predictions, but Ikeya–Seki performed as expected. As it approached perihelion observers reported that it was clearly visible in the daytime sky next to the Sun. In Japan, where it reached perihelion at local noon, it was seen shining at magnitude −10. It proved to be one of the brightest comets seen in the last thousand years, and is sometimes known as the Great Comet of 1965.

The comet was seen to break into three pieces just before its perihelion passage. The three pieces continued in almost identical orbits, and the comet re-appeared in the morning sky in late October, showing a very bright tail. By early 1966, it had faded from view as it receded into the outer solar system.

Comet Humason

Comet Humason, formally designated C/1961 R1 (a.k.a. 1962 VIII and 1961e), was a non-periodic comet discovered by Milton L. Humason on September 1, 1961. Its perihelion was well beyond the orbit of Mars, at 2.133 AU. Its period is 2940 years, and the diameter of its nucleus estimated at about 41 km.

It was a 'giant' comet, much more active than a normal comet for its distance to the Sun, with an absolute magnitude of +1.5, a hundred times brighter than an average new comet. It had an unusually disrupted or 'turbulent' appearance. It was also unusual in that the spectrum of its tail showed a strong predominance of the ion CO+, a result previously seen unambiguously only in Comet Morehouse (C/1908 R1).

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8 (number)

8 (eight /ˈeɪt/) is the natural number following 7 and preceding 9.

In mathematics

8 is:

Porta

Porta can refer to:

People

Places

Porta (rapper)

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Cristian Jiménez Bundo (born 2 July 1988 in Barcelona), known as "Porta", is a catalan rapper He became popular in 2006 through his huge success in social networks, with his "maqueta" No es cuestión de edades (2006) and No hay truco ( 2007), which were widely disseminated on the Internet, where he broke the record of downloads . Porta won greater popularity by releasing his first album En boca de tantos (2008) and so he has to know his world RAP COMANDO group. His third album Trastorno bipolar was released in (2009 ) but did not have the same sales success since their first LP because it did not have the same promotion. Both albums were released by Universal Music Label group. Over time things between Porta and Porta label did not agree and ended up resigning his contract on 24 August 2011 . His previous work, Reset, was released on 7 May 2012 under the label PIAS Spain. After leaving the Universal Music label, his new album scored a number of sales and was welcomed by the public in a positive way and gaining more followers. His latest album Algo ha Cambiado was released on 10 June 2014 in physical format in Spain and in digital format (on iTunes) Worldwide. Until today No hay truco is Portas most downloaded album until now . Today Porta has about 11 million followers on all his accounts online.

Porta, Barcelona

Porta is a neighborhood in the Nou Barris district of Barcelona, Catalonia (Spain).

Coordinates: 41°26′4.74″N 2°10′29.81″E / 41.4346500°N 2.1749472°E / 41.4346500; 2.1749472

Stoa

A stoa (/ˈstoʊə/; plural, stoas,stoai, or stoae /ˈstoʊ.iː/), in ancient Greek architecture, is a covered walkway or portico, commonly for public use. Early stoas were open at the entrance with columns, usually of the Doric order, lining the side of the building; they created a safe, enveloping, protective atmosphere.

Later examples were built as two stories, with a roof supporting the inner colonnades where shops or sometimes offices were located. They followed Ionic architecture. These buildings were open to the public; merchants could sell their goods, artists could display their artwork, and religious gatherings could take place. Stoas usually surrounded the marketplaces of large cities.

The name of the Stoic school of philosophy derives from "stoa".

Famous stoae

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