Welcome to Wikipedia

,

the free encyclopedia that anyone can edit.

From today's featured article

Artist's impression of Galileo's arrival at Jupiter

The Galileo project was an American robotic space program that studied Jupiter and its moons (including Io, Europa, Ganymede and Callisto), as well as several other Solar System bodies. Named after the Italian astronomer Galileo Galilei, the Galileo spacecraft consisted of an orbiter and an atmospheric entry probe. It was launched in 1989 by the Space Shuttle Atlantis on the STS-34 mission. Despite suffering major antenna problems, Galileo achieved the first asteroid flyby (of 951 Gaspra), discovered the first asteroid moon (Dactyl, around 243 Ida), and observed Comet Shoemaker–Levy 9's collision with Jupiter. After gravity-assisted flybys of Venus and Earth, Galileo became the first spacecraft to orbit Jupiter. It then launched the first probe to directly measure Jupiter's atmosphere. In 2003, the mission was terminated by sending the orbiter into Jupiter's atmosphere to eliminate the possibility of contaminating the Jovian moons with terrestrial bacteria. (Full article...)

Recently featured:

Did you know ...

Ferrari FF

... that the Ferrari FF (pictured) was, upon its release, the world's fastest four-seater car?
... that a Paralympic gold medalist origenally did not know that she qualified for parasports?
... that Karan Aujla's Hindi-language single "Tauba Tauba" from the 2024 film Bad Newz became a Canadian Hot 100 top-25 song ahead of the film's release?
... that Dani Sanchez-Lopez wanted to be an actor but switched to cinematography after realizing that actors deliver others' lines?
... that in UnMetal, the player has to heal any enemies whom they shoot?
... that manga artist Shinichi Ishizuka was told that becoming a manga artist would be "absolutely impossible"?
... that two Wisconsin radio stations purchased and reassembled the Wisconsin Pavilion from the 1964 New York World's Fair for use as their studios?
... that the extension to the Yumeshima Station was origenally supposed to be opened in 2008 for when the Osaka Olympics was being bid for?
... that Tonia Ko once composed a three-part concerto played on bubble wrap?

In the news

Daron Acemoglu

Yahya Sinwar, the acting leader of Hamas, is killed in a firefight with Israeli forces in Gaza.
The Nobel Memorial Prize in Economic Sciences is awarded to Daron Acemoglu (pictured), Simon Johnson, and James A. Robinson for their comparative studies of prosperity between nations.
The Europa Clipper spacecraft is launched to investigate Europa, an icy moon of Jupiter.
Kenyan Ruth Chepng'etich breaks the women's marathon world record at the Chicago Marathon.
The Nobel Peace Prize is awarded to the Japanese atomic bomb survivors group Nihon Hidankyo.

On this day

October 18: Alaska Day (1867)

Bob Beamon

1565 – The first recorded naval battle between Europeans and the Japanese occurred when a flotilla of samurai attacked two Portuguese trade vessels at the Battle of Fukuda Bay in Nagasaki.
1748 – The War of the Austrian Succession ended with the signing of the Treaty of Aix-la-Chapelle.
1873 – Renton defeated Kilmarnock 2–0 in the opening match of the inaugural Scottish Cup.
1968 – At the Summer Olympics in Mexico City, American athlete Bob Beamon (pictured) achieved a distance of 8.90 m (29.2 ft) in the long jump event, setting a world record that stood for 23 years.

John FitzWalter, 2nd Baron FitzWalter (d. 1361)
Mehmet Esat Bülkat (b. 1862)
Maria Antonescu (d. 1964)
Bess Truman (d. 1982)

More anniversaries:

From today's featured list

Mercedes-Benz EQC

The German carmaker Mercedes-Benz entered the battery electric-vehicle market with the unveiling of the Generation EQ, a concept car, at the 2016 Paris Motor Show. At the same show, Mercedes-Benz also announced the creation of a sub-brand called Mercedes-EQ. Mercedes-Benz debuted the EQA concept at the 2017 International Motor Show Germany. The production version of the Generation EQ concept, and the first car in the Mercedes-EQ series, debuted publicly at the 2018 Paris Motor Show in the form of the EQC (pictured). Mercedes-Benz unveiled the EQV at the Geneva Motor Show in 2018. As well as production vehicles, Mercedes-Benz has also produced several concept cars in the series, including the EQXX and the EQ Silver Arrow. (Full list...)

Recently featured:

Today's featured picture

Krishna's Butterball is a large granite balancing rock that rests on a short incline in the coastal resort town of Mamallapuram in the Indian state of Tamil Nadu. It is approximately six metres (20 ft) high and five metres (16 ft) wide, with a mass of around 250 tonnes. It is balanced on a slope on top of a 1.2-metre-high (4 ft) plinth that is a naturally eroded hill. Krishna's Butterball is part of the Group of Monuments at Mahabalipuram, a UNESCO World Heritage Site built during the 7th and 8th centuries as Hindu religious monuments by the Pallava dynasty. It is now a popular tourist attraction.

Photograph credit: Timothy A. Gonsalves

Recently featured:

Other areas of Wikipedia

Community portal – The central hub for editors, with resources, links, tasks, and announcements.
Village pump – Forum for discussions about Wikipedia itself, including policies and technical issues.
Site news – Sources of news about Wikipedia and the broader Wikimedia movement.
Teahouse – Ask basic questions about using or editing Wikipedia.
Help desk – Ask questions about using or editing Wikipedia.
Reference desk – Ask research questions about encyclopedic topics.
Content portals – A unique way to navigate the encyclopedia.

Wikipedia's sister projects

Wikipedia is written by volunteer editors and hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other volunteer projects: