Daily Telescope: An ancient galaxy behind a veil of dust
Ars Technica » Scientific Method 2023-12-05
Enlarge / Color composite of galaxy AzTECC71 from multiple color filters in the NIRCam instrument on the James Webb Space Telescope. (credit: J. McKinney/M. Franco/C. Casey/The University of Texas at Austin)
Welcome to the Daily Telescope. There is a little too much darkness in this world and not enough light, a little too much pseudoscience and not enough science. We'll let other publications offer you a daily horoscope. At Ars Technica, we're going to take a different route, finding inspiration from very real images of a universe that is filled with stars and wonder.
Good morning. It's December 5, and today's photo takes us very far from home to a dusty star factory of a galaxy that we need every bit of the James Webb Space Telescope's power to resolve.
This is the object AzTECC71, and astronomers say we are observing the galaxy as it existed just 900 million years after the Big Bang. And since the Universe is 13.7 billion years old, that is light from a long time ago in a galaxy far, far away.