THE EARLIEST GALAXIES YET SEEN. I began this blog with a post on how “the echo from the Big Bang makes up a lot of the static you hear on the radio.” Now the Hubble Space Telescope site is showing images of “galaxies that formed 600 million years after the Big Bang. No galaxies have been seen before at such early times.” The camera collects light from near-infrared wavelengths, which is needed because of the effect of the expansion of the universe: “the light from very distant galaxies is stretched out of the ultraviolet and visible regions of the spectrum into near-infrared wavelengths by the expansion of the universe.” I was referred to the Hubble site by this post at The post shows images of little specks, each of which is an entire galaxy. The earliest of the galaxies are only 600 million years old.

This entry was posted in Science. Bookmark the permalink.

Leave a Reply

Your email address will not be published.