:우주

위키백과, 우리 모두의 백과사전.
  1. "Hubble sees galaxies galore". spacetelescope.org. Archived from the original on May 4, 2017
  2. Planck Collaboration (2016). "Planck 2015 results. XIII. Cosmological parameters". Astronomy & Astrophysics. 594: A13, Table 4. arXiv:1502.01589.
  3. Greene, Brian (2011). The Hidden Reality. Alfred A. Knopf.
  4. Bars, Itzhak; Terning, John (2009). Extra Dimensions in Space and Time. Springer. pp. 27–.
  5. Davies, Paul (2006). The Goldilocks Enigma. First Mariner Books. pp. 43ff.
  6. NASA/WMAP Science Team (January 24, 2014). "Universe 101: What is the Universe Made Of?". NASA.
  7. Fixsen, D.J. (2009). "The Temperature of the Cosmic Microwave Background". The Astrophysical Journal. 707 (2): 916–920. arXiv:0911.1955.
  8. "First Planck results: the universe is still weird and interesting". Matthew Francis. Ars technica. March 21, 2013.
  9. NASA/WMAP Science Team (January 24, 2014). "Universe 101: Will the Universe expand forever?". NASA.