Loop I Bubble

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Loop I Bubble
3D representation of the Local Bubble (white) with neighbouring Molecular Clouds (pink) and a section of the Loop I Bubble (blue).
Observation data: J2000.0[1] epoch
Right ascension 14h 59m [1]
Declination −38.3° [1]
Distance 200 [2] pc
Designations Loop I, Loop I Bubble, Loop I Superbubble, Loop I Supershell[2]
See also: Lists of nebulae

The Loop I Bubble is a cavity in the interstellar medium (ISM) of the Orion Arm of the Milky Way. From our Sun's point of view, it is situated towards the Galactic Center of the Milky Way galaxy. Two conspicuous tunnels connect the Local Bubble with the Loop I Bubble cavity (the Lupus Tunnel).[3] The Loop I Bubble is a supershell.[2]

The Loop I Bubble is located roughly 100 parsecs or roughly 330 light years from our Sun.

See also[edit]


  1. ^ a b c "NAME LOOP I -- SuperNova Remnant Candidate". SIMBAD. Retrieved 15 March 2014. 
  2. ^ a b c Roland J. Egger, Bernd Aschenbach (February 1995). "Interaction of the Loop I supershell with the Local Hot Bubble". Astronomy and Astrophysics 294 (2): L25-L28. arXiv:astro-ph/9412086. Bibcode:1995A&A...294L..25E. 
  3. ^ Lallement, R.; Welsh, B. Y.; Vergely, J. L.; Crifo, F.; Sfeir, D. (2003). "3D mapping of the dense interstellar gas around the Local Bubble". Astronomy and Astrophysics 411 (3): 447. Bibcode:2003A&A...411..447L. doi:10.1051/0004-6361:20031214.