Tuesday, July 12, 2022

James Webb Space Telescope's First Image; More Today

 

ICYMI yesterday, this was the first image of the universe produced by the James Webb Space Telescope (click to enlarge):


From NASA:

NASA’s James Webb Space Telescope has produced the deepest and sharpest infrared image of the distant universe to date. Known as Webb’s First Deep Field, this image of galaxy cluster SMACS 0723 is overflowing with detail.

Thousands of galaxies – including the faintest objects ever observed in the infrared – have appeared in Webb’s view for the first time. This slice of the vast universe covers a patch of sky approximately the size of a grain of sand held at arm’s length by someone on the ground.

This deep field, taken by Webb’s Near-Infrared Camera (NIRCam), is a composite made from images at different wavelengths, totaling 12.5 hours – achieving depths at infrared wavelengths beyond the Hubble Space Telescope’s deepest fields, which took weeks.

The image shows the galaxy cluster SMACS 0723 as it appeared 4.6 billion years ago. The combined mass of this galaxy cluster acts as a gravitational lens, magnifying much more distant galaxies behind it. Webb’s NIRCam has brought those distant galaxies into sharp focus – they have tiny, faint structures that have never been seen before, including star clusters and diffuse features. Researchers will soon begin to learn more about the galaxies’ masses, ages, histories, and compositions, as Webb seeks the earliest galaxies in the universe.

Today at 10:30 the full suite of photos taken by the telescope will be released. Live coverage of the image release broadcast will air on NASA TV, the NASA app, and the agency’s website. The public also can watch live on Facebook, Twitter, YouTube, Twitch, and Daily Motion.

BONUS: At https://www.nasa.gov/webbfirstimages you can see images as they are released, with narrative.