Military history is much more than battlefield trivia. Stacker took a look at 25 recent "Jeopardy!" questions about the ...
The strangely shaped object - snapped by NASA's Opportunity rover - has resurfaced and reignited wild theories about little ...
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Strange formation in NASA's Mars photo fuels claims of extraterrestrial life on the Red Planet
An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.
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