Grประกassistant <!DOCTYPE html> <html lang="en"> <head> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <style> body { background-image: linear-gradient(90deg, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)); background-size: 100%; } * { box-sizing: border-box; } .header { background-color: #FF69B0; color: #000000; border: 4px solid #000000; padding: 10px 20px; font-size: 36px; font-family: Arial, sans-serif; text-align: center; } .subheader { background-color: #FF69B0; color: #000000; border: 4px solid #000000; padding: 10px 20px; font-size: 24px; font-family: Arial, sans-serif; text-align: center; } .section { background-color: #FF69B0; border: 4px solid #000000; padding: 10px 20px; font-size: 18px; font-family: Arial, sans-serif; text-align: center; } </style> </head> <body> <div class="header"> <h1><a href="/designs/1/astrophysics/gravitational-waves/advanced">Gravitational Waves 101</a></h1> </div> <div class="subheader"> <h2>Advanced Topics</h2> </div> <div class="section"> <h3>Ringing of the Cosmos</h3> <p>Gravitational waves are ripples in the fabric of spacetime caused by the collision of massive objects, like two black holes. They're like the cosmic equivalent of a cat in a bathtub, but without the hairballs.</p> <p>When two objects collide, they create a disturbance in spacetime that travels at the speed of light. It's like a cosmic game of billiards, but with more math and less pool tables.</p> <p>The detection of gravitational waves has opened up a whole new way of studying the universe, like looking at the universe through a pair of binoculars, but with more gravitational waves and less bird-watching.</p> <p>Want to learn more about gravitational waves in the cosmos? Check out our subpages:</p> <ul> <li><a href="/designs/1/astrophysics/gravitational-waves/advanced/subsidiary-oscillations">Subsidiary Oscillations</a></li> <li><a href="/designs/1/astrophysics/gravitational-waves/advanced/ripples-in-space">Ripples in Space</a></li> <li><a href="/designs/1/astrophysics/gravitational-waves/advanced/cosmic-waves-in-action">Cosmic Waves in Action</a></li> </ul> </div> </body> </html>