Daily Knowledge

"I know that I am intelligent, because I know that I know nothing."
[Socrates]

Quote of the Day, from brainyquote.com (2026/06/16)

Eric Bana (born 1968) is an Australian actor and producer. He began his career in the comedy series Full Frontal before gaining notice in the comedy drama The Castle (1997) and in Chopper (2000) for which he won the AACTA Award for Best Actor in a Leading Role. Bana gained Hollywood's attention for his performance in the war film Black Hawk Down (2001) and for playing Bruce Banner in the superhero film Hulk (2003). In 2009, he played the villain Nero in the science-fiction film Star Trek, which was a critical and commercial success. Bana continued to work steadily in the 2010s, portraying Lieutenant Commander Erik S. Kristensen in Lone Survivor (2013), and playing police Sergeant Ralph Sarchie in the horror film Deliver Us from Evil (2014). In 2020, he returned to Australia to star in outback thriller The Dry. Bana is the recipient of several Australian Film Institute awards and was appointed a member of the Order of Australia (AM) in 2019 for his services to drama. (Full article...)

Valentina Tereshkova

1755 – After a two-week siege, the French commander of Fort Beauséjour in present-day New Brunswick, Canada, surrendered to British forces, marking the end of Father Le Loutre's War.
1883 – In the Victoria Hall disaster, 183 children were crushed to death when they ran down the stairs to collect gifts after a variety show in Sunderland, England.
1960 – Psycho, a psychological horror film directed by Alfred Hitchcock and based on a novel of the same name by Robert Bloch, premiered.
1963 – Aboard Vostok 6, Soviet cosmonaut Valentina Tereshkova (pictured) became the first woman in space.
2016 – Jo Cox, a British Member of Parliament, was murdered in her constituency.

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 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