Looking back in 4.6 Billions of Years
James Webb Deepest Infrared Image in Layman’s Terms
Do you feel the excitement after looking at this heavenly image above or pass it for being a regular image of the sky? There are definitely these two categories of people existing right now.
NASA has just revealed this ultra-deep infrared image collected by James Webb Space Telescope that shows us the unseen worlds to mankind. A very simple explanation if this image is also provided by NASA on their page so that layman like me can also understand with having very little knowledge on physics. In this article, I would like to provide some key takeaways obtained from this image so that everyone can understand.
The image was captured by James Webb’s Near Infra-Red Camera (NIRCam) after more than 12 hours of exposure towards a galaxy cluster named SMACS 0723.
Key Takeaways
- By simply looking at the image, we are observing our distant past (4.6 billion years). As we know, light takes 8 minutes and 20 seconds to cover the space between the sun and the earth, 4.6 billion years therefore, corresponds to an astronomical distance nearly unimaginable by human.
- Each dot represents one whole galaxy, not a single star. Each of these dots contains hundreds and thousands of stars just…
