NASA has temporarily stopped part of its investigation into possible signs of life on a faraway planet, after two years of ...

NASA’s search for life beyond Earth is no longer a distant dream but a coordinated campaign that now stretches from Martian rocks to interstellar visitors. Instead of chasing flying saucers, ...

A new paper posits that advanced alien civilizations may communicate through subtle flashes, like fireflies do on Earth. The ...

Plans to retrieve Marian rocks that may contain signs of extraterrestrial life appear to have been abandoned by the US ...

Scientists found new evidence (or lack thereof) disproving the conspiracy theory that interstellar comet 3I/ATLAS is alien ...

We could be one step closer to proving alien existence. In 1996, a group of NASA scientists made a stunning announcement: The discovery of what appeared to be bacterial fossils on Mars. President Bill ...

We’re celebrating 180 years of Scientific American. Explore our legacy of discovery and look ahead to the future. In the late 1800s Italian astronomer Giovanni Schiaparelli pointed a telescope at Mars ...

With advanced observatories like the Vera Rubin Telescope coming online, scientists are planning for the discovery of alien intelligence and how humanity should prepare for the news. Professor Dominik ...

A “selfie” taken by the Perseverance Mars rover as it examines Cheyava Falls, an arrowhead-shaped rock in the center that contains potential biosignatures of past Martian life. Credit: ...

New method also detects molecular signs of photosynthesis almost 1 billion years earlier than previously documented; Combining chemistry and AI, pioneering method could revolutionize search for ...

For centuries, humans have gazed at the stars and wondered whether we are alone in the universe. The question of ...

"The universe is a pretty big place. So if it's just us... seems like an awful waste of space," goes a line from the 1997 film "Contact." In the movie, Jodie Foster plays Dr. Ellie Arroway, a radio ...