HEP Phenomenology2026-05-111 minarXiv:2605.11278expressCosmic Hydrogen Catches Gravitational WavesHydrogen is the most common element. Its atoms are like antennas: they emit and absorb light at very specific frequencies. Einstein predicted that spacetime can ripple: these are gravitational waves.George Savvidy·Pavlos Savvidisquadrupole radiation formulaAlbert EinsteinBarry BarishKip Thornehydrogengravitational wavesgravitycarbonhadron👍👎☆SimplePopularAdvanced
