As technological societies advance, their energy demands skyrocket, pushing them up the Kardashev scale. While fossil fuels, ...

The approach takes cues from the famous Drake Equation, which once guided the search for alien civilizations. This updated model focuses on how the density of dark energy and the pace of star ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists have long pondered on one of the universe's greatest mysteries: Are we alone? They have searched the cosmos, but so far ...

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 ...