With a knack for twist endings, M. Night Shyamalan's films tend to invoke discussion, both positively and negatively. While "Signs" is one of his better-received offerings, it's led to much discussion ...

For decades, humanity has scoured the cosmos for any signs that we aren't alone in the universe. NASA spacecraft like the twin Voyager probes – launched in the 1970s bearing the iconic Golden Record – ...

Solar winds and coronal mass ejections may scatter narrow signals, making them harder for Earth-based telescopes to detect. The SETI Institute uses radio telescopes to search for signs of intelligent ...