Back رجل قنطورس Bb Arabic ئالفا قەنتۆری ب ب CKB Alfa Centauri Bb Czech Alpha Centauri Bb German Alfa Centauri Bb Spanish آلفا قنطورس بی‌بی Persian Alfa Centauri Bb Finnish Alpha Centauri Bb French Alpha Centauri Bb ID Alfa Centauri Bb Italian

Alpha Centauri Bb

An ESO artist's impression of the disproven planet Alpha Centauri Bb.

Alpha Centauri Bb (α Cen Bb) was a proposed exoplanet orbiting the K-type main-sequence star Alpha Centauri B, located 4.37 light-years from Earth in the southern constellation of Centaurus, but there has not been enough evidence to support the claim.[1][2]

The claimed discovery of the planet was announced in October 2012 by a team of European observers, and the finding received widespread media attention.[3][4][5][6] However, the announcement was met with scepticism by some astronomers, who thought that the European team was over-interpreting its data.[7]

In October 2015, astronomers from the University of Oxford published a scientific paper disproving the existence of the planet. They observed that an identical statistical analysis of randomly-generated synthetic data gave the same results as the actual astronomical data.[8] This led Xavier Dumusque, the lead author of the original paper, to concede "We are not 100 percent sure, but probably the planet is not there."[9]

  1. ^ Dumusque, X.; Pepe, F.; Lovis, C.; Ségransan, D.; Sahlmann, J.; Benz, W.; Bouchy, F.; Mayor, M.; et al. (17 October 2012). "An Earth mass planet orbiting Alpha Centauri B" (PDF). Nature. 490 (7423): 207–11. Bibcode:2012Natur.491..207D. doi:10.1038/nature11572. PMID 23075844. S2CID 1110271. Retrieved 17 October 2012.
  2. ^ Cite error: The named reference eso1 was invoked but never defined (see the help page).
  3. ^ Wall, Mike (16 October 2012). "Discovery! Earth-Size Alien Planet at Alpha Centauri Is Closest Ever Seen". Space.Com web site. TechMediaNetwork. Retrieved 17 October 2012.
  4. ^ Overbye, Dennis (17 October 2012). "New Planet in Neighborhood, Astronomically Speaking". New York Times. Retrieved 17 October 2012.
  5. ^ Palmer, Jason (17 October 2012). "Exoplanet around Alpha Centauri is nearest-ever". BBC. Retrieved 17 October 2012.
  6. ^ Kaufman, Marc (17 October 2012). "New Planet Is Closest Yet: Earth-Size Lava World a Space "Landmark"". National Geographic. Archived from the original on 18 October 2012. Retrieved 18 October 2012.
  7. ^ Hatzes, A. P. (17 October 2012). "Meet our closest neighbour". Nature. 491 (7423): 200–201. Bibcode:2012Natur.491..200H. doi:10.1038/nature11636. PMID 23075846. S2CID 37768785.
  8. ^ Rajpaul, Vinesh (19 October 2015). "Ghost in the time series: no planet for Alpha Cen B". Monthly Notices of the Royal Astronomical Society: Letters. 456: L6–L10. arXiv:1510.05598. Bibcode:2016MNRAS.456L...6R. doi:10.1093/mnrasl/slv164.
  9. ^ Powell, Devin (29 October 2015). "Poof! The Planet Closest To Our Solar System Just Vanished". National Geographic. Archived from the original on 30 October 2015. Retrieved 15 January 2015.

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