The heat wave taking over the US this weekend is just getting started. CNN Meteorologist Chad Myers breaks down which cities will be feeling like more than 100 degrees, and when relief is expected. | CNN Weather

"✨ The Cosmic Microwave Background (CMB) is the faint glow of the early universe, a snapshot of the cosmos just 380,000 years after the Big Bang. It's the oldest light we can see, revealing secrets of our universe's origins and evolution. Every time you look up at the night sky, remember: you're gazing at echoes from 13.8 billion years ago! 🌌💫 #CosmicMicrowaveBackground #BigBang #Universe #Astrophysics #ScienceReels #CMB #CosmicRadiation #SpaceExploration #StellarOrigins #QuantumCosmos #Cosmic

The Cosmic Microwave Background (CMB) is the cooled remnant of the first light that could ever travel freely throughout the Universe. This ‘fossil’ radiation, the furthest that any telescope can see, was released soon after the ‘Big Bang’. Scientists consider it as an echo or ‘shockwave’ of the Big Bang. Over time, this primeval light has cooled and weakened considerably; nowadays we detect it in the microwave domain. It took about 300,000 years for the Universe to cool down to a temperature at