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Relativity

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KM3NeT/ORCA Finds No Violation of Lorentz Invariance and Sets First Muon–Tau Limits

Analysis of 5,828 atmospheric neutrinos rules out sizable symmetry-breaking effects, signaling the detector’s growing power as the array expands.

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Hubble Image Reveals Galaxy Cluster That Looks Like a Giant Smiley

Physicists Offer New-Physics Explanation for an 'Impossible' 300‑TeV Photon from the BOAT

Quantum Atoms in Free Fall Accumulate Phase Predicted by Einstein

BepiColombo Separates Transfer Module and Begins Final Approach to Mercury

BepiColombo Executes Risky Separation to Begin Mercury Arrival

Fastest Milky Way Star S301 Could Let Astronomers Measure Black Hole Spin

Astronomers Discover S301, the Milky Way’s Fastest Star Orbiting Sagittarius A*

NASA Debunks Viral Claim That Earth Will Lose Gravity for Seven Seconds During Eclipse

World Prepares for Record-Length Total Solar Eclipse on August 2, 2027

Physicists Propose Optical Clock Tests for Quantum Time in Peer‑Reviewed Study

Astronomers Measure Cygnus X-1’s ‘Dancing’ Black Hole Jets at 10,000 Suns of Power

Largest-Ever Cosmic Test Finds Gravity Falls With Distance as Theory Predicts

Superluminous Supernova’s ‘Chirp’ Tied to Tilted Magnetar and Frame-Dragging

Breakthrough Listen Reports Candidate Millisecond Pulsar Near Sagittarius A*

Dark Matter Core Model Challenges Black Hole at Milky Way’s Center

Star-Shredding Black Hole’s Radio Jet Still Surging, With Peak Predicted Around 2027

Early-Universe Quasar Defies Models With 13 Times the Eddington Limit, Bright X-Rays and a Radio Jet

NIST Finds Mars Clocks Run 477 Microseconds Faster Per Earth Day

Voyager 1 Nears One Light-Day From Earth, With Two-Day Command Cycles Ahead