God and aliens are having a moment. But what do Christianity and other faiths really teach about ETs?

As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters ...

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow ...