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Interstellar cloud
The Local Interstellar Cloud and neighboring G-cloud complex.gif
The G-Cloud complex and neighboring Local Interstellar Cloud
Observation data
Designations G Cloud[1]
See also: Lists of nebulae

The G-Cloud (or G-Cloud complex) is an interstellar cloud located next to the Local Interstellar Cloud. It is unknown whether the Solar System is embedded in the Local Interstellar Cloud or in the region where the two clouds are interacting, although the Solar System is currently moving towards the G-Cloud. The G-Cloud contains the stars Alpha Centauri (a triple star system that includes Proxima Centauri) and Altair (and possibly others).[2][3][4][5][6][7]


  1. ^ "NAME G CLOUD -- Cloud". Simbad.cfa.harvard.edu. Retrieved 15 March 2014. 
  2. ^ "Our Local Galactic Neighborhood". Interstellar.jpl.nasa.gov. Retrieved 2015-10-07. 
  3. ^ Paul Gilster (2010-09-01). "Into the Interstellar Void". Centauri-dreams.org. Retrieved 2015-10-07. 
  4. ^ "The Interstellar Medium". Archived from the original on 19 April 2012. Retrieved 22 October 2012. 
  5. ^ Seth Redfield (2009). "Physical Properties of the Local Interstellar Medium" (PDF). Igpp.ucla.edu. Retrieved 2015-10-07. 
  6. ^ Frisch., Priscilla (2003-02-03). "Local Interstellar Matter: The Apex Cloud". arXiv.org e-Print archive. Bibcode:2003ApJ...593..868F. arXiv:astro-ph/0302037Freely accessible. doi:10.1086/376684. Retrieved 2016-03-04. 
  7. ^ "Short Sharp Science: Spacecraft probes gas cloud swaddling the solar system". Newscientist.com. 2012-02-02. Retrieved 2015-10-07.