Sunday, November 12, 2023

The Young Universe

Environmental & Science Education, STEM, Astronomy, Cosmology, Astrophysics, Earth & Space Science, Nature of Science, History of Science

Ed Hessler

This image from Astronomy Picture of the Day (APOD) of the galaxy UHZI was taken "at a remarkable...distance of 13.2 billion years, seen when our universe was about 3 percent of its current age."

According to the explanation, "the massive cluster of galaxies Abell 2744" acts , because of its "enormous mass as a gravitational lens to warp spacetime and magnify even more distant objects behind it." This is how UHZI was found. The APOD image includes two insets, one "from the spacebased Chandra X-Ray Observatory and infrared light from the James Webb Space Telescope."

The short explanation contains more and includes a cosmological hint that it may be used to determine how and when it was formed. This is a tease and I wish more had been said about the "how".


No comments:

Post a Comment