An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived, blue stars forged in these regions emit copious amounts of ultraviolet light, ionizing the surrounding gas. H II regions—sometimes several hundred light-years across—are often associated with giant molecular clouds in which star formation takes place, and from which the stars that produce the H II region were born. The first known H II region was the Orion Nebula, which was discovered in 1610 by Nicolas-Claude Fabri de Peiresc.

H II regions are named for the large amount of ionised atomic hydrogen they contain, referred to as H II, pronounced H-two, or [ɛ:itʃ-tu] (IPA), by astronomers (an H I region being neutral atomic hydrogen, and H₂ being molecular hydrogen). They have extremely diverse morphologies, because the distribution of the stars and gas inside them is inhomogeneous. They often appear clumpy and filamentary, sometimes showing bizarre shapes like the Horsehead Nebula. H II regions may give birth to thousands of stars over a period of several million years. In the end, supernova explosions and strong stellar winds from the most massive stars in the resulting star cluster will disperse the gases of the H II region, leaving behind a cluster such as the Pleiades.

Adidja Palmer (born 7 January 1976)- better known as Vybz Kartel, is a Jamaican dancehall artist, songwriter and businessman. He has many nicknames, including: Addi, The Teacher, World Boss, Kartel, Vybz, Gaza General and Gaza Don.

Adidja Palmer began his career as a teenager in 1993 with his first recording "Love Fat Woman", released on Alvin Reid's label "One Heart", using the moniker "Adi Banton", a homage to Buju Banton. Palmer was later part of the three-member group "Vybez Cartel", keeping the slightly altered name after group split up, and became a protege of Bounty Killer, for whom he claims to have written nearly 30 songs, including "Gal Clown".

Vybz Kartel rose to prominence in 2003 after a string of hits in Jamaica. The year culminated in a pre-planned on-stage clash with Ninjaman at the annual dancehall festival Sting in Kartel's hometown of Portmore. The clash turned violent when Kartel's crewmembers, as well as Kartel himself, threw punches and assaulted Ninjaman onstage. While Kartel's manager initially blamed Ninjaman for the fracas, Kartel himself quickly apologised to Ninjaman and Sting organizers for the fracas. Four days after the incident, the two artists appeared before the press to announce a settlement of their differences and to end any animosity.

Aditya Roy Kapur (born 16 November 1985) is an Indian film actor who currently features in Hindi films. Starting out as a VJ with Channel V, he made his film debut with a role in Vipul Shah's film London Dreams (2009), and later gained visibility for his roles in the 2010 films Action Replayy and Guzaarish.

Born in Mumbai, Aditya did his schooling from G. D. Somani Memorial School, in Cuffe Parade, Mumbai and subsequently graduated from St. Xavier's College, Mumbai, University of Mumbai.

Kapur started his career as a VJ on music channel Channel V, where his comic timing and "unique style of hosting" made him a hit, and then made his debut as a Pakistani musician in the 2009 musical London Dreams by Vipul Shah, where he co-starred Ajay Devgan and Salman Khan as one of the two brothers, part of Ajay Devgan's band in the movie, along with another VJ, Rannvijay Singh.

Then starred in the Vipul Shah's next, a 2010 time-traveling comedy Action Replayy, playing Akshay Kumar and Aishwarya Rai's adult son who goes back in time to make their marriage a love marriage, his performance in the film caught a critic's eye. He acted again alongside Aishwarya Rai, in Guzaarish (2010) directed by Sanjay Leela Bhansali, where he played an apprentice magician to Hrithik Roshan's character. Next, he will be seen as the main lead in Gautham Menon's Hindi version of his forthcoming trilingual film, opposite Samantha Ruth Prabhu. The film is also simultaneously being shot with actors Jeeva and Nani and should be set for release during the Summer of 2012. The film has recently been titled Assi Nabey Poore Sau. Aditya has also been roped in for Ayan Mukerji's upcoming film with Ranbir Kapoor and Deepika Padukone, Yeh Jawani Hai Deewani. He has been cast opposite Kalki Koechlin.

Shraddha Kapoor (Hindi: श्रद्धा कपूर) is an Indian film actress who appears in Bollywood films. In 2011, she was signed by Aditya Chopra for a three-film contract with Yash Raj Films she starred in Y-Films's venture Luv Ka The End.

Shraddha Kapoor was born in Mumbai to actor Shakti Kapoor and Shivangi Kapoor. She is the niece of actress Padmini Kolhapure. Her older brother Siddhanth is a Disc Jockey and an assistant director.

She did her schooling at Jamnabai Narsee School in Juhu and then enrolled at Boston University, taking up theatre studies. She quit during her freshman year in order to pursue acting.

Shraddha Kapoor made her acting debut in 2010 with the film Teen Patti alongside Amitabh Bachchan, Madhavan, and Raima Sen. The film tanked at the box office, and her performance went partially unnoticed. For her role as college rockstar Aparna, she had workshops with Royston Abel, Ashley Lobo and Barry John. Shraddha described her character as "a studious girl and is also a guitarist in her college’s music band" and "a very intriguing person."

Salman Khan (pronunciation : [səlˈmaːn ˈxaːn]; born Abdul Rashid Salim Salman Khan on 27 December 1965) is an Indian film actor. He has starred in more than 80 Hindi films.

Khan, who made his acting debut with a minor role in the drama Biwi Ho To Aisi (1988), had his first commercial success with the blockbuster Maine Pyar Kiya (1989), for which he won a Filmfare Award for Best Male Debut. He went on to star in some successful Hindi films of those times, such as Saajan (1991), Hum Aapke Hain Koun..! (1994), Karan Arjun (1995), Judwaa (1997), Pyar Kiya To Darna Kya (1998) and Biwi No.1 (1999), having appeared in the highest earning films of seven separate years during his career.

In 1999, Khan won a Filmfare Award for Best Supporting Actor for his extended appearance in Kuch Kuch Hota Hai (1998), and since then has starred in several critical and commercial successes, including Hum Dil De Chuke Sanam (1999), Tere Naam (2003), Mujhse Shaadi Karogi (2004), No Entry (2005), Partner (2007), Wanted (2009), Dabangg (2010), Ready (2011) and Bodyguard (2011), which has become the second highest-grossing Bollywood film of all-time. Khan has thus established himself as one of the most successful actors of Hindi cinema.