🌊 Cosmic Ripples From Popping Bubbles: A Simple Trick To Model Gravitational Waves From The Early Universe
A clever “envelope” method shows how countless tiny bubbles could have filled the young universe with gravitational waves
Posts
🧶 Cosmic Strings, Textures, And The First Tiny Ripples We Saw In The Big Bang’s Light
How “cracks” in space and time could have shaped the universe—and what clues we should look for in the sky
🌟 A Superfast Zone Revealed Near A Quasar’s Heart
A very broad helium glow in PG 1138+222 points to an extreme inner region close to its black hole
🌀 Finding The Milky Way’s Edge: Where Our Stellar City Thins To Nothing
Deep star counts in a clear patch of sky suggest the Milky Way’s old stellar disc ends more sharply than you might think
đź”” When Black Holes Ring: How We Tell Real Gravitational Waves From Noise
A friendly guide to the math that powers discoveries in LIGO and future space observatories—and what it can reveal about a black hole’s mass and spin