Why an advanced alien civilisation really COULD wipe us out: Scientists identify two possible exoplanets where extraterrestrials may have had a five billion year head start on life on Earth

10 months ago 48

1. Homepage
2. Science
3. Why an advanced alien civilisation really COULD wipe us out: Scientists identify two possible exoplanets where extraterrestrials may have had a five billion year head start on life on Earth