Webb imaged a huge galaxy cluster located 3.2 billion light-years away, which is acting like a magnifying glass and showing a far-off supernova in triplicate.
Since the start of science operations of the James Webb Space Telescope in July last year, we’ve been treated to a flood of images showing space targets from nebulae to deep fields. This month, Webb researchers shared a new image captured by the telescope’s NIRCam instrument which shows a both gorgeous field of galaxies and an important astronomical phenomenon called gravitational lensing.
One of the galaxies being lensed is particularly notable because it contains something special. Toward the top right, the same galaxy is imaged three times, due to the lensing effect. Within this triple-lensed galaxy is an exceptionally bright event, a Type Ia supernova. These occur when a small but dense star called a white dwarf is part of a binary system with another star and pulls material away from its companion.
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