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IRAS 20324+4057 is a mixture of interstellar gas and dust that extends a light year in length in the Cygnus constellation, 4,600 light-years away.[2] It is located within the Cygnus OB2 association.[2] It has been imaged by the Hubble Space Telescope and has been nicknamed a "Cosmic Caterpillar", as it resembles a crawling caterpillar.[3] The head of the object is a protostar, but the presence of 65 O-type stars, which tend to scatter the matter accumulated by the Cosmic caterpillar, leaves doubt whether the caterpillar will survive and mature into a star.[4]

IRAS 20324+4057
Nebula
Cosmic Caterpillar (HST image in green and infrared light)
Observation data: J2000 epoch
Right ascension20h 34m 13.25177s[1]
Declination+41° 08′ 13.8973″[1]
Distance4600 ly   (1400[2] pc)
ConstellationCygnus
Physical characteristics
Dimensions54″.7 × 14″.1[2]
See also: Lists of nebulae

References


  1. "IRAS 20324+4057". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2022-02-19.
  2. Sahai, R.; Morris, M. R.; Claussen, M. J. (2012). "Shocked and Scorched: The Tail of a Tadpole in an Interstellar Pond". The Astrophysical Journal. 751 (1): 69. arXiv:1201.5067. Bibcode:2012ApJ...751...69S. doi:10.1088/0004-637X/751/1/69. S2CID 119191141.
  3. "NASA's Hubble Sees a Cosmic Caterpillar". Science Daily.
  4. Vincent, James (30 August 2013). "Nasa spots a 'Cosmic Caterpillar' in the middle of metamorphosis". The Independent. London.


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