By Phil Larson
Thank you for signing the petition asking the Obama Administration to acknowledge an extraterrestrial presence here on Earth.
The U.S. government has no evidence that any life exists outside our planet, or that an extraterrestrial presence has contacted or engaged any member of the human race. In addition, there is no credible information to suggest that any evidence is being hidden from the public's eye.
However, that doesn't mean the subject of life outside our planet isn't being discussed or explored. In fact, there are a number of projects working toward the goal of understanding if life can or does exist off Earth. Here are a few examples:
A last point: Many scientists and mathematicians have looked with a statistical mindset at the question of whether life likely exists beyond Earth and have come to the conclusion that the odds are pretty high that somewhere among the trillions and trillions of stars in the universe there is a planet other than ours that is home to life.
Many have also noted, however, that the odds of us making contact with any of them—especially any intelligent ones—are extremely small, given the distances involved.
But that's all statistics and speculation. The fact is we have no credible evidence of extraterrestrial presence here on Earth.
Phil Larson works on space policy and communications at the White House Office of Science & Technology Policy