What If on MSN
Aliens just visited Earth. Here’s what happens next
Are we alone in the Universe? With more than 100 billion galaxies in the observable universe and at least 500 billion planets ...
The Fermi paradox asks why we haven’t found aliens yet. Scientists say the answer may lie in timing, technology, and the vast ...
"Star Trek" may be science fiction, but the technology depicted in its shows has often led to real-world equivalents being developed that we can use today.
Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results