"I didn't think; I experimented."
[Anthony Burgess]

Quote of the Day, from brainyquote.com (2026/02/21)

Article of the Day

Shigi Qutuqu (c. 1178 – 1260) was a high-ranking official during the early decades of the Mongol Empire. The adopted son of the empire's founder Temüjin (later titled Genghis Khan) and his wife Börte, Shigi Qutuqu played an important role in the codification of Mongol law, serving with distinction as an administrator in northern China. He was brought up in Temüjin's household and was one of the first Mongols to become literate. The Secret History exaggerates Shigi Qutuqu's role in the years after the empire's foundation, but he was nevertheless appointed to several high-ranking legal positions, in which he served during the Mongol conquest of the Jin dynasty. He was the commander during the only Mongol defeat in the western campaign against Khwarazmia, being overcome by Jalal al-Din at the 1221 Battle of Parwan. Shigi Qutuqu continued his career as an official during the reign of his adopted brother Ögedei Khan, Genghis's successor. (Full article...)

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Source: Wikimedia Commons.

On this day: February 21

February 21

Lucy Hobbs Taylor
Lucy Hobbs Taylor

Knowledge about Earth

Facts and Figures

  • Age of Earth: ~ 4.568 billion years
  • World Population: 7.3 billion (July 2015)
  • Continents: 7 (Asia, Africa, North America, South America, Antarctica, Europe, and Australia)
  • Mean Radius: 6371.0 km
  • Axial Tilt: 23,44°

Image Source: Wikipedia - License: Public Domain (thanks to NASA)

Our Solar System

Our solar system consists of
1 star (Sun) and 8 planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune).

  • 1 AU (astronomical unit) is roughly the distance between Earth and the Sun (about 150 million kilometres).
  • The space probe Voyager 1 was launched by the NASA in 1977 and is meanwhile (autumn 2015) about 133 AU away from Earth.

Image Source: Wikipedia - License: CC BY-SA 3.0

Why you should extend your general knowledge:

There are many reasons why one should or wants to extend his knowledge.
First you should consider that "general knowledge" is knowledge which a group of humans - who belong together regional, temporal or otherwise - owns. Thus, it describes a basic understanding of specific categories of knowledge.

As the English philosopher Francis Bacon said before: "Wisdom is Power" [Bacon 1597].