But a more fundamental reason for our failure to find extraterrestrial life could be that we are, indeed, alone.
And this, they said with rising enthusiasm, might just be the place to look for extraterrestrial life.
It is about the first human contact with extraterrestrial life.
"And searching for extraterrestrial life was a hot subject that we thought would sell," she said.
She's been searching for signs of extraterrestrial life ever since she was a little girl.
But the simple fact is that we have not yet found extraterrestrial life.
This equipment has been assembled for study of extraterrestrial life.
However, there may be another way to detect signs of extraterrestrial life.
I was already quite certain that extraterrestrial life exists in the universe.
Planets in these areas are the most likely to have extraterrestrial life.