Beauty

Beauty is a characteristic of a person, animal, place, object, or idea that provides a perceptual experience of pleasure or satisfaction. Beauty is studied as part of aesthetics, sociology, social psychology, and culture. An "ideal beauty" is an entity which is admired, or possesses features widely attributed to beauty in a particular culture, for perfection.

The experience of "beauty" often involves an interpretation of some entity as being in balance and harmony with nature, which may lead to feelings of attraction and emotional well-being. Because this can be a subjective experience, it is often said that "beauty is in the eye of the beholder."

There is evidence that perceptions of beauty are evolutionarily determined, that things, aspects of people and landscapes considered beautiful are typically found in situations likely to give enhanced survival of the perceiving human's genes.

Etymology

The classical Greek noun that best translates to the English "beauty" or "beautiful" was κάλλος, kallos, and the adjective was καλός, kalos. However, kalos may and is also translated as ″good″ or ″of fine quality″ and thus has a broader meaning than only beautiful. Similarly, kallos was used differently from the English word beauty in that it first and foremost applied to humans and bears an erotic connotation.

Earth

Earth /ˈɜːrθ/ (also the world, in Greek: Γαῖα Gaia, or in Latin: Terra) is the third planet from the Sun, the densest planet in the Solar System, the largest of the Solar System's four terrestrial planets, and the only astronomical object known to harbor life.

According to evidence from radiometric dating and other sources, Earth was formed about 4.54 billion years ago. Earth gravitationally interacts with other objects in space, especially the Sun and the Moon. During one orbit around the Sun, Earth rotates about its own axis 366.26 times, creating 365.26 solar days or one sidereal year. Earth's axis of rotation is tilted 23.4° away from the perpendicular of its orbital plane, producing seasonal variations on the planet's surface with a period of one tropical year (365.24 solar days). The Moon is Earth's only permanent natural satellite. Its gravitational interaction with Earth causes ocean tides, stabilizes the orientation of Earth's rotational axis, and gradually slows Earth's rotational rate.

Unknown

Unknown or The Unknown may refer to:

Mathematics

Film

Music

Other uses

Neil Young

Neil Percival Young, OC OM (born November 12, 1945) is a Canadian singer-songwriter and musician. He began performing in a group covering Shadows instrumentals in Canada in 1960, before moving to California in 1966, where he co-founded the band Buffalo Springfield together with Stephen Stills and Richie Furay, and later joined Crosby, Stills & Nash in 1969. He released his first album in 1968 and has since forged a successful and acclaimed solo career, spanning over 45 years and 35 studio albums, with a continuous and uncompromizing exploration of musical styles. The Rock and Roll Hall of Fame website describes Young as "one of rock and roll's greatest songwriters and performers". He was inducted into the Hall of Fame twice, first as a solo artist in 1995, and second as a member of Buffalo Springfield in 1997.

Young's music is characterized by his distinctive guitar work, deeply personal lyrics and characteristic alto or high tenor singing voice. Although he accompanies himself on several different instruments, including piano and harmonica, his idiosyncratic electric and acoustic guitar playing are the defining characteristics of a varyingly ragged and melodic sound.

Neil deGrasse Tyson

Neil deGrasse Tyson (/ˈniːəl dəˈɡræs ˈtaɪsən/; born October 5, 1958) is an American astrophysicist, cosmologist, author, and science communicator. Since 1996, he has been the Frederick P. Rose Director of the Hayden Planetarium at the Rose Center for Earth and Space in New York City. The center is part of the American Museum of Natural History, where Tyson founded the Department of Astrophysics in 1997 and has been a research associate in the department since 2003.

Born in New York City, Tyson became interested in astronomy at the age of nine after a visit to the Hayden Planetarium. After graduating from the Bronx High School of Science, where he was editor-in-chief of the Physical Science Journal, he completed a bachelor's degree in physics at Harvard University in 1980. After receiving a master's degree in astronomy at the University of Texas at Austin in 1983, he earned his master's (1989) and doctorate (1991) in astrophysics at Columbia University. For the next three years, he was a postdoctoral research associate at Princeton University, and in 1994, he joined the Hayden Planetarium as a staff scientist and the Princeton faculty as a visiting research scientist and lecturer. In 1996, he became director of the planetarium and oversaw its $210-million reconstruction project, which was completed in 2000.