Planets beyond Neptune

Following the discovery of the planet Neptune in 1846, there was considerable speculation that another planet might exist beyond its orbit. The search began in the mid-19th century and culminated at the start of the 20th with Percival Lowell's quest for Planet X. Lowell proposed the Planet X hypothesis to explain apparent discrepancies in the orbits of the giant planets, particularly Uranus and Neptune, speculating that the gravity of a large unseen ninth planet could have perturbed Uranus enough to account for the irregularities.

Clyde Tombaugh's discovery of Pluto in 1930 appeared to validate Lowell's hypothesis, and Pluto was officially named the ninth planet. In 1978, Pluto was conclusively determined to be too small for its gravity to affect the giant planets, resulting in a brief search for a tenth planet. The search was largely abandoned in the early 1990s, when a study of measurements made by the Voyager 2 spacecraft found that the irregularities observed in Uranus's orbit were due to a slight overestimation of Neptune's mass. After 1992, the discovery of numerous small icy objects with similar or even wider orbits than Pluto led to a debate over whether Pluto should remain a planet, or whether it and its neighbours should, like the asteroids, be given their own separate classification. Although a number of the larger members of this group were initially described as planets, in 2006 the International Astronomical Union reclassified Pluto and its largest neighbours as dwarf planets, leaving Neptune the farthest known planet in the Solar System.

Kevin MacLeod

Kevin MacLeod or Kevin McLeod may refer to:

See also

Immortal Technique

Felipe Andres Coronel (born February 19, 1978), better known by the stage name Immortal Technique, is an American rapper and urban activist. Most of his lyrics focus on controversial issues in global politics. His lyrics are largely commentary on issues such as class struggle, socialism, poverty, religion, government, imperialism, politics and institutional racism.

Immortal Technique has voiced a desire to retain control over his production, and has stated in his music that record companies, not artists themselves, profit the most from mass production and marketing of music. He claimed in an interview to have sold close to a combined total of 200,000 copies of his first three official releases.

Biography

Early life

Coronel is Peruvian and was born in a military hospital in Lima. His family emigrated to Harlem, New York in 1980. During his teenage years, he was arrested multiple times due in part to what he has said was "selfish and childish" behavior. He attended Hunter College High School on the Upper East Side of Manhattan. Shortly after enrolling in Pennsylvania State University, he was arrested and charged with assault-related offenses due to his involvement in an altercation between fellow students, the charges stemming from this incident led to him being incarcerated for a year.