Scientists detect strongest hint yet of universe's ancient supernova neutrino background

After analyzing nearly 5,000 days of data, the Super-Kamiokande Collaboration reports the strongest indication yet of the Diffuse Supernova Neutrino Background (DSNB), a faint cosmic sea of neutrinos from all past supernovae. In other developments, researchers simulated Hawking radiation in a lab using fiber optics, Perseverance found complex carbon on a Martian rock surface, astronomers spotted a rare six-galaxy mega-merger, and JWST revealed the atmosphere of lava world 55 Cancri e.

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Super-Kamiokande finds strongest hint of ancient supernova neutrino background After analyzing nearly 5,000 days of observations, the Super-Kamiokande Collaboration has reported its strongest indication yet of the Diffuse Supernova Neutrino Background (DSNB), a faint signal from neutrinos released by all supernovae across cosmic history. This result could transform understanding of stellar evolution and black hole formation. 1

Lab experiment confirms Hawking radiation using artificial event horizon Physicists at the University of Paderborn and the Weizmann Institute created an artificial event horizon in fiber optic cables with laser pulses, successfully simulating Hawking radiation. The study, published in Nature, provides tangible evidence for the theoretical energy loss from black holes proposed by Stephen Hawking in 1974. 2

Perseverance finds complex carbon on Martian rock surface at Bright Angel NASA's Perseverance rover detected macromolecular carbon sitting directly on the surface of rocks at the Bright Angel site in Jezero Crater, the shallowest such detection on Mars. The carbon's origin remains unclear, with both biological and non-biological explanations possible, pending sample return. 3

Astronomers spot extremely rare six-galaxy mega-merger A team led by Z.L. Wen of the Chinese Academy of Sciences identified a group of six massive galaxies merging into a single supermassive galaxy, surrounded by a 310 kpc shroud of intracluster light. The discovery, made using DESI Legacy Imaging Surveys, offers a glimpse into the violent dynamics of galaxy cluster formation. 4

JWST reveals atmosphere of hellish lava world 55 Cancri e Using JWST, scientists observed five eclipses of the super-Earth 55 Cancri e and found its atmosphere likely contains abundant hydrogen, carbon monoxide, and carbon dioxide. The findings, submitted to Nature Astronomy, suggest the planet's atmosphere is tied to its molten interior and may exhibit outgassing-driven clouds. 5