'Supernova discovery machine' James Webb Space Telescope finds most distant star explosion on record

JADES Deep Field uses observations taken by NASA's James Webb Space Telescope showing the location of newly discovered supernova explosionsWhen it comes to hunting for the explosive deaths of massive stars in the early universe, the James Webb Space Telescope is quite the cosmic detective. This celestial Sherlock Holmes has found evidence of 80 new early supernovas in a patch of sky as wide as a grain of rice held at arm's length.

That shifts this supernova light down into the infrared region of the electromagnetic spectrum, a region the JWST is adept at viewing the universe in. In the future, scientists hope to look back to the"toddler" phase of the universe — or even back to its cosmic infancy, ideally stumbling upon theTo obtain this new cavalcade of supernova observations, the JADES team took multiple images of the same patch of the sky at year-long intervals. Then, they compared the images.

The light outputs of these events are uniform with the same intrinsic brightness, seemingly regardless of distance. This means they can be used asand also serve as markers to gauge the rate at which the fabric of space is expanding. However, should the intrinsic brightness of Type Ia supernovas change at high redshifts, their utility at measuring large cosmic distances would be limited.

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