Spiral arms are regions in spiral galaxies. They often contain dust,gas and star clusters of young ,hot and massive stars. They extend from the central bulge area of spiral and barred spiral galaxies. The young, hot and massive stars are why the arms are brighter than the center of the galaxy. Some spiral galaxies have yellow, 'fossil' arms of older stars.
Our own Milky Way was found to be a spiral galaxy in the early 20th century. In the 1990s it was found to be a barred spiral galaxy. The bar is difficult to see from our position in the Galactic disk. The most convincing evidence for its existence comes from a survey, performed by the Spitzer Space Telescope, of stars in the Galactic center.
Terry Buck
Terrence William "Terry" Buck was an Australian swimmer and coach. He represented Australia at the 1964 Summer Olympics in the 400m individual medley and placed eighth. He was the first Australian swimmer to participate at the Olympics as both an athlete and a coach. He was head coach in the 1984 Summer Olympics, and team manager in 1992 and 1996. Buck was also a surf lifesaver and a life member of the Clovelly Surf Club in New South Wales. He died in a tractor accident on his farm, leaving behind his wife, Laraine and three daughters.
In 2003, Greg Rogers filed a civil lawsuit against Buck. He claimed that Buck had sexually abused him from 1960 when Rogers was 11 and Buck was 16. He also said that his younger brother, Neil, was sexually abused from when he was eight. This was settled outside court. After Buck died, the Telegraph published an interview with an anonymous "Olympic and Commonwealth medalist" who said that he had been abused by Buck as a child. The person who was interviewed was not named, but many knew it was Rogers. Police had begun private investigations into the matter in 1998, but stopped the investigation in 2001, saying that it did not have enough proof. His wife said that the stories were all untrue. She said that she had "trusted" Rogers, who had been the godfather of their late daughter, Sarah, and that having "looked at it from every angle, I can say with certainty in my they are lies."
Edwin Hubble
Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer. Hubble's findings changed the scientific view of the universe.
In 1925 he showed that there are galaxies beyond our own, the Milky Way. Also, he developed a method for classifying galaxies.
Then he proved the galaxies were moving away from each other. Hubble found the degree of Doppler effect (redshift) from a galaxy increased in proportion to its distance from Earth. Doppler effect is the change in pitch or colour when an object or sound comes in (higher pitch, brighter color) or moves away (lower and darker). Redshift is observed in the light spectrum
In 1929 Hubble formulated what is called Hubble's law. The law states that the greater the distance between any two galaxies, the greater their relative speed of separation. Georges Lemaître, a Belgian priest and astronomer, had published the idea two years before in an obscure journal. Nevertheless, the idea bears Hubble's name to this day.
Today, the 'apparent velocities' of galaxies are understood as an increase in proper distance which occurs due to the expansion of space. Light traveling through stretching space experiences a Hubble-type redshift.
This work helped to establish that the universe is expanding. Some have incorrectly said that Hubble discovered the Doppler shift in the spectra of galaxies, but this had already been observed earlier by Vesto Slipher, whose data Hubble used.
The Hubble Space Telescope was named after Hubble.
According to Sandage, Hubble achieved four main things:
Hubble himself did not see his 1929 data as evidence for an expanding Universe. Even six years later, Hubble wrote:
Hubble's words were forgotten, and the notion of the expansion of the universe became the consensus. Until the theoretical developments in the 1980s no one had an explanation for why this seemed to be the case. The question "why is the universe expanding?" is now answered by understanding the details of what happened in the first inflationary epoch (10 seconds) of the existence of our universe.
Act (drama)
An act is a way to divide an opera, play, or other drama. Each act is a group of scenes that form an important part of the story. A story will be from one to five acts. Many modern stories are three acts, which match with the beginning, middle, and end of the story. One act is from about 30 to 60 minutes long.
Nationalization
Nationalization is when a business is owned and run by the government. If the government stops owning the business and it becomes controlled by citizens, this is called privatization.
Star Wars: TIE Fighter
Star Wars: TIE Fighter is a space flight simulator game that came out in 1994. It takes place in the "Star Wars" universe and has starfighters and other spacecraft from the movies and books. The player flies starfighters for the Galactic Empire in various missions.
"TIE Fighter" takes place in several parts with different storylines. In early missions the player fights against members of the Rebel Alliance, as well as space pirates and other enemies. There is also a story section where the player helps the Empire mediate between two groups that have been at war but say they want a peace treaty.
Later in the game, the player helps find out about a plot by a traitor Admiral to leave the Empire and join the Rebellion, and steal Imperial ships and technology. The rest of the game is about the player working with the Empire to stop the traitors.
In "TIE Fighter", the player is a starfighter pilot who flies in combat missions. The game is normally played in first person from the view of the cockpit, but the player can also choose third person camera. There are many starfighters the player can fly, but some can not be used until later in the game. For many missions the player can choose which starfighter to fly and what warheads to use during the mission.
Most missions are combat missions. The player fights enemy starfighters, as well as "capital ships", which are very large starcraft that are hard to destroy. Different missions have different goals. Sometimes the player will escort supplies, scan other spacecraft, or simply hunt enemy ships.
Since the game is in space there is no gravity and the player can fly in any direction. Each starfighter the player can use has laser guns and many have warheads and rechargeable shields.
Starfighter
A starfighter is a fictional type of spacecraft made for combat in space. The word starfighter is based on the word dogfighter. Starfighters are small and fast. In stories, they most often hold only one or two pilots.
Intellivision
The Intellivision is a video game console created by toy company Mattel. It was made to compete with the Atari 2600. It was launched in 1980 and discontinued in 1991. Today, Intellivision is owned by Intellivision Entertainment, which is making a new Intellivision-branded console named Intellivision Amico, which will come out in North America, the United Kingdom, the rest of Europe and the MENA region on October 10, 2020.
Empire State of Mind
"Empire State of Mind" is a song by Jay-Z and Alicia Keys. It was released as the third single from Jay-Z's 11th music album "The Blueprint 3" (2009). The song is about New York City, and has a music sample of "Love on a Two-Way Street" (1970) by The Moments. The title of the song takes its name from Billy Joel's "New York State of Mind" (1976).
Indianapolis Motor Speedway
The Indianapolis Motor Speedway (IMS) is in Speedway, Indiana (an enclave suburb of Indianapolis) in the United States. It is the home of the Indianapolis 500 race and the Brickyard 400 race.