HAT-P-23 is a G-type main-sequence star 1192 light-years away. It has a rapid rotation (rotation period equal to 7 days) for its advanced age of 4 billion...

HAT-P-11b (or Kepler-3b) is an extrasolar planet orbiting the star HAT-P-11. It was discovered by the HATNet Project team in 2009 using the transit method...

HAT-P-17 is a K-type main-sequence star about 92.4 parsecs (301 ly) away. It has a mass of about 0.857 ± 0.039 M☉. It is the host of two planets, HAT-P-17b...

A pork pie hat is one of several different styles of hat that have been worn since the mid-19th century. The pork pie hat gained further popularity in...

HAT-P-67 is a binary star system, made up of a F-type subgiant and a red dwarf star, which is located about 1,200 light-years away in the constellation...

published on 17 December 2019, with an additional pair of names (for the star HAT-P-21 and its planet) approved on 1 March 2020. An additional two star names...

HAT-P-36, also referred to as Tuiren is a 12th magnitude G-type main-sequence star estimated to be approximately 958 light-years away from Earth in the...

Red Hat, Inc. (formerly Red Hat Software, Inc.) is an American software company that provides open source software products to enterprises[clarification...

A hat is a head covering which is worn for various reasons, including protection against weather conditions, ceremonial reasons such as university graduation...

HAT-P-33 (2MASS J07324421+335006, GSC 2461-00988) is a late-F dwarf star. It is orbited by a planet called HAT-P-33b. A search for a binary companion star...

A bucket hat (variations of which include the fisherman's hat, Irish country hat and session hat) is a hat with a narrow, downward-sloping brim. Typically...

romanized: ṭarbūš), is a felt headdress in the shape of a short, cylindrical, peakless hat, usually red, typically with a black tassel attached to the top. The name...

HAT-P-30, also known as WASP-51, is the primary of a binary star system about 700 light-years away. It is a G-type main-sequence star. HAT-P-30 has a similar...

The bowler hat, also known as a Coke hat, billycock, bob hat, bombín (Spanish) or derby (United States), is a hard felt hat with a rounded crown, originally...

A hat-trick or hat trick is the achievement of a generally positive feat three times in a match, or another achievement based on the number three. The...

HAT-P-9 is a magnitude 12 F star approximately 1500 light years away in the constellation Auriga. A search for a binary companion star using adaptive...

Medicine Hat, Alberta, Canada in April 2006. The murders were planned and committed by the family's 12-year-old daughter Jasmine Richardson and her 23-year-old...

HAT-P-18 is a K-type main-sequence star about 530 light-years away. The star is very old and has a concentration of heavy elements similar to solar abundance...

football hat-trick scoring, including exceptional numbers of hat-tricks; exceptional feats in scoring a hat-trick; and achievements relating to the hat-trick...

A grey hat (greyhat or gray hat) is a computer hacker or computer security expert who may sometimes violate laws or typical ethical standards, but usually...

The Cat in the Hat (also known as Dr. Seuss' The Cat in the Hat) is a 2003 American fantasy comedy film directed by Bo Welch in his directorial debut and...

HAT-P-33b is a planet in the orbit of HAT-P-33, which lies 1,310 light years away from Earth. Its discovery was reported in June 2011, although it was...

A slouch hat is a wide-brimmed felt or cloth hat most commonly worn as part of a military uniform, often, although not always, with a chinstrap. It has...

HAT-P-3, is a metal-rich K5 dwarf star located about 441 light-years away in the constellation Ursa Major. At a magnitude of about 11.5 it is not visible...

English terms for the hat include sedge hat, rice hat, paddy hat, bamboo hat, and—historically but now only offensively—coolie hat. In Southeast Asia, it...

"The Man in the Yellow Hat" and taken from Africa to America where the two live together. George and the Man in the Yellow Hat become friends. George's...

'ears'), also called an ushanka-hat (Russian: шапка-ушанка, romanized: shapka-ushanka, [ˈʂapkə ʊˈʂankə]), is a Russian fur hat with ear-covering flaps that...

Medicine Hat is a city in southeast Alberta, Canada. It is located along the South Saskatchewan River. It is approximately 169 km (105 mi) east of Lethbridge...

A fedora (/fəˈdɔːrə/) is a hat with a soft brim and indented crown. It is typically creased lengthwise down the crown and "pinched" near the front on...

The tricorne or tricorn is a style of hat that was popular during the 18th century, falling out of style by the early 1800s, though not called a "tricorne"...