About the Object

Constellation: Cassiopeia
Category: MIRI


Position (RA):23 40 49.28
Position (Dec):61° 11' 23.27"
Field of view:1.24 x 1.93 arcminutes
Orientation:North is 150.6° left of vertical

Colours & filters

Infrared 15 μmJames Webb Space Telescope

Parallel field to protostar IRAS23385

This image was taken by Webb’s Mid-InfraRed Instrument (MIRI) of a region parallel to the massive protostar known as IRAS23385. 

IRAS 2A and IRAS23385 (not visible in this image) were targets for a recent research effort by an international team of astronomers that used Webb to discover that the key ingredients for making potentially habitable worlds are present in early-stage protostars, where planets have not yet formed.

With MIRI’s unprecedented spectral resolution and sensitivity, the JOYS+ (James Webb Observations of Young ProtoStars) programme individually identified organic molecules that have been confirmed to be present in interstellar ices. This includes the robust detection of acetaldehyde, ethanol, methyl formate, and likely acetic acid, in the solid phase.

[Image description: A region of a molecular cloud. The cloud is dense and bright close to the top of the image, like rolling clouds, and grows darker and more wispy towards the bottom and in the top corner. One bright star, and several dimmer stars, are visible as light spots among the clouds. The image is a single exposure which has been assigned an orange colour for visibility.]


ESA/Webb, NASA, CSA, W. Rocha et al. (Leiden University)

About the Image

Id: weic2409a
Type: Observation
Release date: 13 March 2024, 14:00
Related releases: weic2409
Size: 668 x 1039 px

Image Formats

Large JPEG 141.1 KB
Screensize JPEG 181.0 KB



1024x768 131.6 KB
1280x1024 181.9 KB
1600x1200 227.7 KB
1920x1200 244.2 KB
2048x1536 314.3 KB

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