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science1d ago
Mind-Bending 'Einstein Cross' Reveals Ultrabright Supernova From an Unthinkable Distance
- Astronomers detected SN 2025wny, a superluminous supernova, about 10 billion light-years away, thanks to a gravitational lens.
- Foreground galaxies act as a cosmic magnifying glass, boosting the supernova’s brightness by about 50 times.
- Keck Observatory confirmed the spectra of the unusual signal, solidifying the event’s nature as a distant supernova.
- The time delays between the multiple lensed images offer a new way to measure the universe’s expansion rate.
- This finding may help address the Hubble tension by testing whether the tension reflects new physics or measurement limits.
- Follow-up observations with Hubble and James Webb are planned to study SN 2025wny further.
- SN 2025wny marks the first superluminous supernova observed through gravitational lensing.
- The discovery showcases multi-messenger astronomy by combining different observational techniques.
- Scientists describe SN 2025wny as a milestone and a glimpse into a rapidly unfolding era for astronomy.
- Researchers used a combination of telescopes and spectroscopy to confirm the event's details.
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