Gravitational Waves
New model revives Einstein's idea for universe's origin
Scientists from Spain and Italy have proposed a model that replaces cosmic inflation with gravitational waves as the key force in the universe's early formation. Published in Physical Review Research, the study suggests gravity and quantum mechanics alone can explain the cosmos's structure. This approach draws on a century-old concept linked to Albert Einstein's work.
Twin black hole mergers test Einstein's general relativity
Two black hole collisions detected in late 2024 have provided unprecedented tests of Einstein's general theory of relativity. The events, captured by the LIGO-Virgo-KAGRA Collaboration, revealed unusual spins and possible second-generation black holes. These detections confirm theoretical predictions with high precision and probe for new particles.
Strongest Black Hole Collision Detected
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Astronomers detected the strongest black hole collision yet on September 11, 2025, resonating with Einstein's predictions. The event involved massive black holes merging, producing significant gravitational waves. This finding was published in a leading science journal, advancing astrophysics.
Astronomers propose detecting gravitational wave beats via pulsars
Researchers at Hirosaki University have suggested a method to identify the source of ultra-low-frequency gravitational waves by looking for 'beat' patterns in pulsar signals. This approach could distinguish between waves from cosmic inflation and those from supermassive black hole binaries. The proposal builds on 2023 evidence from pulsar timing arrays that falls short of full confirmation.