If our solar system is young compared with the rest of the universe ... throughout the cosmos by now? Basically, where are the aliens? Perhaps we haven't encountered alien civilizations because ...

NASA has worked on its own first contact protocols, conducting a 2024 workshop event about how best to communicate the ...

Our universe does host life, but it’s not the most optimal universe for life. Published in 1962 by American astronomer Frank ...

Throughout human history, our understanding of the universe has undergone significant changes. From ancient times, people saw Earth as the cosmic center. The Copernican revolution displaced us from ...

By combining linguistics, mathematics, and astrophysics, they create signals that can be transmitted across the cosmos, bridging the vast distances between stars in the ultimate attempt at ...

What can Earth’s technosignatures—the potential signs of intelligence beyond Earth—teach us about finding technosignatures throughout the | Space ...

The Milky Way could be teeming with interstellar alien ... the universe would be more data on the speed or ranges of interstellar probes. A better sense of how long hypothetical alien ...

In the case of astrobiology, we would conclude that the cosmos ... universe, which makes the SETI search even harder, says Lewis. But the current eerie silence suggests that advanced civilizations ...

One possible reason why we haven't found any intelligent life in the cosmos the Great Filter argument, which says that very few civilizations make it to the advanced spacefaring stage.