Tuesday, September 27, 2022

Spiral Galaxy IC 5332 | Hubble & Webb Views

Spiral Galaxy IC 5332: Hubble & Webb Views

Webb’s icy instrument reveals complex structures

The Hubble image shows dark regions that seem to separate the spiral arms, whereas the Webb image shows more of a continual tangle of structures that echo the spiral arms’ shape. This difference is due to the presence of dusty regions in the galaxy.

Ultraviolet and visible light are far more prone to being scattered by interstellar dust than infrared light. Therefore dusty regions can be identified easily in the Hubble image as the darker regions that much of the galaxy’s ultraviolet and visible light has not been able to travel through. Those same dusty regions are no longer dark in the Webb image, however, as the mid-infrared light from the galaxy has been able to pass through them.

Different stars are visible in the two images, which can be explained because certain stars shine brighter in the ultraviolet, visible and infrared regimes respectively. The images complement one another in a remarkable way, each telling us more about IC 5332’s structure and composition.

Credits: ESA/Webb, NASA & CSA, J. Lee and the PHANGS-JWST and PHANGS-HST Teams; CC BY 4.0

Release Date: September 27, 2022

#NASA #ESA #Astronomy #Space #Hubble #JWST #Galaxy #IC5332 #Sculptor #Constellation #Cosmos #Universe #SpaceTelescopes #GSFC #STScI #UnitedStates #CSA #Canada #Europe #STEM #Education

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