HAT-P-21 is a G-type main-sequence star about 927 light-years away. The star has amount of metals similar to solar abundance. The survey in 2015 has failed...

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-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...

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 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...

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...

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

HAT-P-14b, officially named Sissi also known as WASP-27b, is an extrasolar planet located approximately 224.2 ± 0.6 parsecs (731.2 ± 2.0 ly) away in the...

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-38, formally named Horna, is a star located in the northern constellation Triangulum. It has an apparent magnitude of 12.51, making it readily visible...

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...

HAT-P-13c is a substellar object orbiting the star HAT-P-13 located 698 light years away from Earth in the constellation of Ursa Major. A search for transits...

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-41 is a binary star system. Its primary is a F-type main-sequence star. Its surface temperature is 6390±100 K. compared to the Sun, HAT-P-41 is...

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...

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...

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...

A top hat (also called a high hat, or, informally, a topper) is a tall, flat-crowned hat traditionally associated with formal wear in Western dress codes...

HAT-P-12 is a magnitude 13 low-metallicity K dwarf star approximately 463 light years away in the constellation Canes Venatici, which hosts one known...

HAT-P-24 is an F8 dwarf star about 413 parsecs away. A planet was discovered with the transit method by the HATNet Project in 2010. HAT-P-24b, is a typical...

A campaign hat, sometimes called campaign cover, is a broad-brimmed felt or straw hat, with a high crown, pinched symmetrically at the four corners. The...

HAT-P-27, also known as WASP-40, is the primary of a binary star system about 659 light-years away. It is a G-type main-sequence star. The star's age...

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-13, also known as GSC 03416-00543, is a G-type main sequence star approximately 800 light-years away in the constellation Ursa Major. In 2009 it...

HAT-P-13b is an extrasolar planet approximately 700 light-years away in the constellation Ursa Major. The planet was discovered when it transited across...

HAT-P-19 is a K-type main-sequence star about 658 light-years away. The star is old yet metal enriched, having amount of heavy elements 250% of solar...

Pointed hats have been a distinctive item of headgear of a wide range of cultures throughout history. Although often suggesting an ancient Indo-European...

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...

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...

Premier League,[a] in 1992, exactly 202 players have scored three goals (a hat-trick) or more in a single match. The first player to achieve the feat was...