How the universe was made ? 🤔... By the Big Bang around 13.7 billion years !!! ago 😑. well that's what people told us , right? but how do we know when uni…

Detailed map of CMB, from the data of  Wilkinson Microwave Anisotropy Probe, the probe was launched in 2001 and it took 9 years to complete this map. this image is…