James Webb telescope unveils largest-ever map of the universe, spanning over 13 billion years
Scientists have unveiled the largest map of the universe ever created. Stretching across a tiny sliver of space and almost all cosmic time, it includes almost 800,000 galaxies imaged across the universe. Some are so far away that they appear as they existed in the infant universe, about 13 billion years ago.
The map, released Thursday (June 5) by scientists at the Cosmic Evolution Survey collaboration , covers a 0.54-degree-squared arc of the sky, or about three times as much space as the moon takes up when viewed from Earth.
To collect the data for the map, the James Webb Space Telescope (JWST) spent 255 hours observing a region of space nicknamed the COSMOS field. This patch of sky has very few stars, gas clouds or other features blocking our view of the deep universe, so scientists have been surveying it with telescopes across as many wavelengths of light as possible.
JWST’s observations of the COSMOS field have given us an incredibly detailed view of the universe going back as far as 13.5 billion years. [Continue reading…]