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NASA Releases First Image of “Mars” Taken by James Webb Space Telescope | HYPEBEAST

After the previous “Spider Nebula“Backwards,NASA Today it was again released byWebb space telescopeThe captured image of “Mars” is also the first image of Mars returned by the telescope since its launch at the end of last year.

Since the Webb Space Telescope is designed to detect distant galaxies, it is easy for very close Mars to cause the instrument to show a chaotic image of the detector saturation. Astronomers can only use a very short exposure image to receive through the received portion. of light with the application of special data analysis techniques to adjust the extreme brightness of Mars.

The images and spectra released this time were acquired on September 5, mainly through the NIRCam near-infrared camera and NIRSpec near-infrared spectrometer, and the location was the eastern half of Mars. First you can see on the right side of Figure 1 two images taken by NIRCam with a short wavelength of 2.1 microns and a long wavelength of 4.3 microns.The first shows the Huygens crater, the rocks Great Setis dark volcanic and simple Greek, and the latter shows It is an image of thermal radiation. The brightness of the light is related to the temperature of the surface and the atmosphere. The bright yellow is right on the detector’s epipolar saturation line, but is also absorbed by carbon dioxide as it passes through the atmosphere.

Then Figure 2 shows the spectrum recorded by NIRSpec, also the first spectrum of Mars from the Webb space telescope, in which preliminary analysis revealed a rich set of spectral signatures, including information on dust, ice clouds, types of rocks on the planet’s surface, and the composition of the atmosphere In the future, Mars team members will use this information to continue looking for differences in different areas of the surface and for traces of gases such as methane and hydrochloric acid in the atmosphere.

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