Image: Horsehead Nebula (NASA Webb NIRCam) (IMAGE)
Caption
This image of the Horsehead Nebula from NASA’s James Webb Space Telescope focuses on a portion of the horse’s “mane” that is about 0.8 light-years in width. It was taken with Webb’s NIRCam (Near-infrared Camera). The ethereal clouds that appear blue at the bottom of the image are dominated by cold, molecular hydrogen. Red-colored wisps extending above the main nebula represent mainly atomic hydrogen gas. In this area, known as a photodissociation region, ultraviolet light from nearby young, massive stars creates a mostly neutral, warm area of gas and dust between the fully ionized gas above and the colder nebula below. As with many Webb images, distant galaxies are sprinkled in the background. This image is composed of light at wavelengths of 1.4 and 2.5 microns (represented in blue), 3.0 and 3.23 microns (cyan), 3.35 microns (green), 4.3 microns (yellow), and 4.7 and 4.05 microns (red).
Credit
NASA, ESA, CSA, K. Misselt (University of Arizona) and A. Abergel (IAS/University Paris-Saclay, CNRS)
Usage Restrictions
No restrictions.
License
Public Domain