MIGHTY on Instagram: "Physicist Brian Cox often points to a strange moment in scientific history when talking about alien contact — the “Wow! Signal” of 1977. Detected by the Big Ear radio telescope in Ohio, the signal was a powerful, narrowband radio burst that lasted exactly 72 seconds, coming from deep space near the constellation Sagittarius. It was so unusual that astronomer Jerry Ehman famously circled the data and wrote “Wow!” next to it — giving the signal its name. What makes this momen