Stellar plasma can smear alien radio signals before they escape their star system, making them harder for astronomers to detect.

Far from our solar system, astronomers have spotted a world that looks less like a sphere and more like a squeezed lemon, a distorted gas giant that refuses to behave the way planetary theory says it ...

When we think about signals and systems, we often do so with an emphasis on creating and transmitting signals with specific characteristics. That is, we want the signal to have some desired amplitude, ...