The University of Colorado Boulder (unofficially University of Colorado at Boulder, although also commonly referred to as CU-Boulder, CU, Boulder, or Colorado) is a public research university located in Boulder, Colorado, United States. It is the flagship university of the University of Colorado system and was founded five months before Colorado was admitted to the union in 1876. According to The Public Ivies: America's Flagship Public Universities (2001), it is considered one of the thirty "Public Ivy League" schools. In 2010, the university consisted of nine colleges and schools and offered over 150 academic programs and enrolled 29,952 students. Ten Nobel Laureates, eight MacArthur Fellows, and 18 astronauts have been affiliated with CU-Boulder as students, researchers, or faculty members in its history. The university received nearly US$454 million in sponsored research in 2010 to fund programs like the Laboratory for Atmospheric and Space Physics, JILA, and National Institute of Standards and Technology's NIST-F1 atomic clock. Colorado Buffaloes competes in nine intercollegiate sports in the NCAA Division I Pacific-12 Conference. The Buffaloes have won 24 NCAA championships: 18 in skiing, five total in men's and women's cross country, and one in football. Approximately 1,500 students participate in 34 intercollegiate club sports annually as well.