An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.
New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth ...
In 1877, an Italian astronomer mapped faint lines on Mars and called them canali, meaning channels or grooves. But the word ...
Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...