Rujukan Gliese_581_c

  1. 1 2 3 4 5 6 7 Vogt, S. S.; et al. (2010). "The Lick-Carnegie Exoplanet Survey: A 3.1 M_Earth Planet in the Habitable Zone of the Nearby M3V Star Gliese 581". arXiv:1009.5733 [astro-ph.EP].
  2. 1 2 3 Than, Ker (2007-04-24). "Major Discovery: New Planet Could Harbor Water and Life". space.com. Dicapai 2007-04-29. 
  3. ↑ Than, Ker (2007-02-24). "Planet Hunters Edge Closer to Their Holy Grail". space.com. Dicapai 2007-04-29. 
  4. ↑ "New 'super-Earth' found in space". BBC News. 25 April 2007. Dicapai 2007-04-25.  Check date values in: |date= (bantuan)
  5. ↑ http://www.chara.gsu.edu/RECONS/TOP100.2007.0426.htm
  6. ↑ Udry; dll. (2007). "The HARPS search for southern extra-solar planets, XI. An habitable super-Earth (5 M⊕) in a 3-planet system" (PDF). Astronomy and Astrophysics. preprint: preprint. Selenggaraan CS1: Penggunaan eksplisit et al. (link)