IC 443 (also known as the Jellyfish Nebula), a galactic supernova remnant in the constellation Gemini (Image: NASA)
ET, phone… each other? If aliens really are conversing, we are not picking up what they are saying. Now one researcher claims to have a way of tuning in to alien cellphone chatter.
On Earth, the signal used to send information via cellphones has evolved from a single carrier wave to a “spread spectrum” method of transmission. It’s more efficient, because chunks of information are essentially carried on multiple low-powered carrier waves, and more secure because the waves continually change frequency so…
